A Norman window consists of a rectangle surmounted by a semicircle. If the perimeter of a Norman window is to be 20ft., what should the radius of the semicircle and the height of the rectangle be so that the window will admit the most light?

Q: A bridge across a river is in the form of an arc of a circle. If the span is 40ft and the midpoint…

A: Please see the answer below.

Q: If the height of an equilateral triangle is 7/3, then the length of its side is

A:

Q: Matilda is asked to determine the volume of usable wood available in a given tree. To do so, she…

A: Draw a schematic diagram of given question.

Q: A 3​-ft wide circular track for a camera dolly is set up for a movie scene. The two rails of the…

A: Circles

Q: A circle is drawn inside a square so its circumference touches each of the four sides of the square.…

A:

Q: Two gears are adjusted so that the smaller gear, with a radius of 12.4cm, drives the larger one. If…

A:

Q: picture of a 4 feet vase standing on a 3 feet pedestal. She wants to position the camera at point c…

A: To find the distance between camera and foot of pedestal.

Q: Prove that if two triangles are similar their heights are in the same proportion as their sides.

A: