Surface Area

Question 1

Which three-dimensional figures have lateral faces that are polygons? Check all that apply.conescylindershemispheresprismspyramidsspheres

Revolt · Accepted Answer

cylinders; prisms; pyramids

Question 2

A jumbo crayon is composed of a cylinder with a conical tip. The cylinder is 12 cm tall with a radius of 1.5 cm, and the cone has a slant height of 2 cm and a radius of 1 cm.

Revolt · Accepted Answer

The lateral area of the cone is π cm2.: 2; To wrap paper around the entire lateral surface of the cylinder, π cm2 of paper is needed.: 36; The surface area, including the bottom base of the crayon, is π cm2.: 41.5

Question 3

A cone has a radius of 5 cm and a slant height of 10 cm.

Revolt · Accepted Answer

✔ 25; The area of the base of the cone is π cm2.: 25; The lateral area of the cone is π cm2.: 50; The surface area of the cone is π cm2.: 75

Question 4

510✔ 5060

Revolt · Accepted Answer

✔ 50

Question 5

355060✔ 75

Revolt · Accepted Answer

✔ 75

Question 6

A box is in the shape of an equilateral triangular prism. If the box is to be covered with paper on its lateral sides, how many square inches of paper are needed?

Revolt · Accepted Answer

72 square inches

Question 7

Which statements are correct? Check all that apply.

Revolt · Accepted Answer

The surface area of the sphere in terms of r is 4πr2 square units.; The surface area of the cylinder in terms of r is 4πr2 square units.; The surface area of the cylinder and sphere are the same.

Question 8

A right cylinder has a radius of r inches and height of 2r inches.

Revolt · Accepted Answer

✔ 4; In terms of r, the lateral area of the cylinder isr2π square inches.: 4; The area of the two bases together is r2π square inches.: 2; The total surface area of the cylinder isr2π square inches.: 6

Question 9

1✔ 246

Revolt · Accepted Answer

✔ 2

Question 10

124✔ 6

Revolt · Accepted Answer

✔ 6

Surface Area Answers

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