Surface Area of Cones and Spheres

What is the formula for the surface area of a cone?

If the radius of a cone is 5 cm and the slant height is 12 cm, what is the surface area of the cone?

• 314.16 cm²

• 78.54 cm²

• 47.1 cm²

• 157.08 cm²

What is the formula for the surface area of a sphere?

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

A cone has a radius of 6 cm and a slant height of 10 cm. If the surface area is 150π cm², find the height of the cone.

• 8 cm

• 20 cm

• 12 cm

• 5 cm

A sphere has a surface area of 314.16 cm². What is its radius?

• 3 cm

• 7 cm

• 10 cm

• 5 cm

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

If the surface area of a cone is 100π cm² and the radius is 4 cm, find the slant height.

• 10 cm

• 12 cm

• 8 cm

• 6 cm

A cone has a surface area of 200π cm² and a radius of 10 cm. Find the slant height.

• 20 cm

• 15 cm

• 30 cm

• 25 cm

A sphere has a surface area of 1256.64 cm². What is its volume?

• 268.08 cm³

• 375.12 cm³

• 528.96 cm³

• 642.32 cm³

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

If the surface area of a cone is 120π cm² and the slant height is 15 cm, find the radius.

• 6 cm

• 4 cm

• 10 cm

• 8 cm