Given the internal radius of the pipe 2 cm, the external radius 2.4 cm, and the length of the pipe 10 cm, find the volume of the metal used, in cubic centimeters.

Given the internal radius of the pipe 2 cm, the external radius 2.4 cm, and the length of the pipe 10 cm, find the volume of the metal used, in cubic centimeters.

A cone-shaped roof has a diameter of 12 feet and a height of 8 feet. If roofing material comes in 120 square-foot rolls, how many rolls will be needed to cover this roof?

The ratio between the curved surface area and the total surface area of a right circular cylinder is 1:2. If the total surface area is 616 square centimeters, which of the following statements is/are NOT true about the given right circular cylinder?

A 5 cm cube is cut into as many 1 cm cubes as possible. What is the ratio of the surface area of the larger cube to that of the sum of the surface areas of the smaller cubes?

Ram a farmer, managed to grow shaped-watermelons inside glass cases of different shapes. The shapes he used were: a perfect cube, hemispherical, cuboid, cylindrical along with the normal spherical shaped watermelons. Thickness of the skin was same for all the shapes. Each of the glass cases was so designed that the total volume and the weight of the all the water-melons would be equal irrespective of the shape. A customer wants to buy water-melon for making juice, for which the skin of the water-melon has to be peeled off, and therefore is a waste. Which of the following shaped-watermelons should the customer buy?

Which of the following formula should be used to solve for the volume V of a cylinder where the area of the base B and the height h are given?

Calculate the volume of a water cylinder with total height of 10 meters, diameter of 400 centimeters, and whose top section is a semi-sphere.

Which of the following statements is/are true about a sphere with radius 1.75 meters and a square pyramid with one side of the base 3.2 meters and height of 6.575 meters? (Select all that apply.)

A 4 cm cube is cut into 1 cm cubes. What is the percentage increase in the surface area after cutting?

Calculate the volume of a cylinder, in cubic centimeter, where the radius of the base is 14 cm and the height is 10 cm.