Three circles with radii 3.0, 5.0, and 9.0 cm are externally tangent. What is the area of the triangle formed by joining their centers?

Q: Given the radii are portions of the mid-section of the shaded figure, calculate the circumference of…

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Q: Two spheres have radii a and b. Prove that the ratio of the areas is a 2  : b 2

A: We know that area of a sphere A=4πr2 Where r is the radius of a sphere.

Q: The sides of triangle are 8cm, 10cm and 14cm. Find the radius of the circle which is escribed…

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Q: (a) Find the length of the arc of the colored sector in the figure. (b) Find the area of the sector…

A: (a) Arc length of a sector with radius r and central angle θ° is given by L=πr180 θ So arc length of…

Q: Find the area of a sector with central angle 2pai/3 rad in a circle of radius 10 m.

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Q: The radii of two concentric circles are 4 cm and 5 cm, find the length of the chord of one circle…

A: Given:

Q: Three spheres are externally tangent to each other in pairs. Their radii have lengths of 1 in., 2…

A: Consider the diagram represented as per given information,

Q: In the diagram below of circle A, diameter MP = 26, M2GAI = 30° and radii GA and Al are drawn. M A P…

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Q: Three spheres are tangent to each other in pairs. Their radii have lengths of 1 in., 2 in., and 3…

A: Given The radius of three circles are 1 in , 2 in  and 3 in respectively  .

Q: 14. Find the area of the circle, which is tangent to side AB of triangle ABC. AB = 12 cm. BC = 24…

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Q: 5. Find the area of a circular sector with a central angle of 330° and a radius of 8 inch

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Q: Two circles, with radii of 3 m and 5 m, respectively are 4 m apart. Find the area of the portion of…

A: The solution is given below in the next step:

Q: If AC = 5 ft and Base BC = 3 ft: %3D 1. What is the area of the blue shaded А region with in the…

A: The objective is to find the area of the blue shaded region in the circle.

Q: Two cones have radii 6 cm and 9 cm. The heights are 10 cm and 15 cm.respectively. Are the cones…

A: Two cones are similar if the ratio of their radii is equal to the ratio of their heights. It is…

Q: Find the area of the largest isosceles triangle that can be inscribed in a circle of radius 1…

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Q: The two circles shown above have radii of 2 in. and 8 in. Circumference of Circle A What is ?…

A: Note that:Circumference of Circle = 2πr Where r= radius of the circle    Let, Circle A be the circle…

Q: .) A regular pentagon has a radius of 8 ft area?

A: The radius of a regular pentagon r= 8 ft.

Q: 1.) A regular pentagon has a radius of 8 ft. What is its area?

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Q: The radii of two concentric circles are 4 cm and 5 cm, find the length of the chord of one circle…

A: The radii of two concentric circles are 4cm and 5cm.

Q: À circle is inscribed in a triangle having sides of lengths 5 in., 12 in., and 13 in. If the length…

A: Given that, Sides of a triangle consider a=5 in., b = 12 in. and c = 13 in. And radius of inscribed…

Q: A regular pentagon is inscribed in a circle whose radius is 18cm. Find the perimeter of the…

A: Perimeter = sum of all sides of pentagon

Q: In the accompanying diagram, CD is tangent to circle O at B, AO and BO are radii, and chord AB is…

A: Given figure,

Q: The area of circle A is A

A: Given that, The area of circle A = 45 square units Circle A and circle B are related by a scale…

Q: Find the area of a sector with a radius of 10 and a central angle of 52 degrees. Round your answer…

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Q: Three circles with radii 3, 6, and 9 ft are externally tangent to one another, as shown in the…

A: Radii of circles are 3,6 and 9 ft which are externally tangent to each other. We need to find area…

Q: Find the area of a sector with a central angle of 180° and a diameter of 6.2 cm. Round to the…

A: to find the area of sector with central angle θ=180°diameter d = 6.2 cm

Q: A cone was created by rolling a thin sheet of metal into the shape of a 72cm diameter sector of a…

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Q: Find the ratio of the areas of two circles with radii 4 and 7

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Q: 1. A circle is tangent to the quarter circle and to two sides of the square as shown below. If the…

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Q: A sector with a radius of 4 cm has a central angle measure of 135". 0 = 135" r = 4 cm What is the…

A: The formula for area of sector is given below: Area=θ360°×πr2

Q: The length of arc AB of a circle with center at O is equal to twice the length of the radius r of…

A: Let's first sketch the figure for this question:…

Q: In a circle of radius r, what is the area A of a sector with  central angle u radians?

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Q: Considering the area of a circular ring as an increment of area of a circle, find approximately the…

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Q: Find the area of a sector with central angle 4π/5 rad in a circle of radius 8 m.

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Q: Find the area of the sector formed by central angle q = 5.2 in a circle of radius 3 centimeters.

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Q: Find the area of a hemisphere of radius R.

A: A hemisphere is obtained from a sphere by cutting in between in two equal parts. Since the half…

Q: Three circles of radii 14cm, 20cm, and 18cm are tangent to each other. Find the area of the triangle…

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Q: (a) Find the length of the arc of the colored sector in the figure. (b) Find the area of the sector…

A: The radius of a circle is r=8 cm. The angle is θ=45∘ a) The length of the arc is given as L=2πrθ360∘…

Q: Find the area of the sector formed by central angle e = 2.2 in a circle of radius 7 centimeters.

A: Given radius (r)=7 cm Central angle θ=2.2°

Q: A bicycle wheel travels 32π in. for each revolution. What is the radius of the wheel?

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Q: The area of a circle is 225TTTT in?. What is its radius?

A: Given area of the circle 225π in2 To find the radius of the circle

Q: A diameter consists of two separate radii. O True O False

A: Recall:  Every diameter has length equal to the twice the radius.

Q: Find the radius of the circle whose area is 100 cm2

A: GIVEN ,AREA OF CIRCLE , A = 100cm2

Q: Given three circles of radius r, tangent to each other as shown in the following diagram, what is…

A: ANSWER B: Let the radius of the circle be "r" Three circles are forming an equilateral triangle So,…

Q: Find the area of the annulus of two concentric circles whose radii are 5 inches and 3 inches.

A: Given: R=5 inches and r=3 inches

Q: A circle is inscribed in a square. If the perimeter of the square is 32 cm, find the circumference…

A: Answer is given below

Q: The pattern for a design is made of two circles that are concentric. The chord of the larger circle…

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Q: The sides of a triangle are 7 m, 9 m, and 11 m, respectively. Find the radius, in m, of the circle…

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Q: a. Are all circles similar?b. If two circles have radii 9 and 12, what is theratio of the…

A: (a) The shape of the circles are always round and shape of all the circles are same. The size of the…

Q: Two overlapping circles of radii 1 cm are drawn such that each circle passes through the center of…

A: To find the perimeter of the entire region