Surface Area of Three Dimensional Figures Cylinder and Hemisphere Joined

A __________ is 2 parallel circles of equal size and are joined together by a curved surface.

• hemisphere

• sphere

• cone

• cylinder

What is the formula for the Surface Area of a Cylinder? SA = ___

• SA = 2πr(h + r)

• SA = πr^2h

• SA = 2πrh

• SA = πr^2 + 2πrh

Find the surface area of the Cylinder. Use pi = 3.14

Find the surface area of each shape. (use π = 3.14)

What is the surface area of the cylinder?

• 176π cm²

• 376.8 cm³

• 376.8 cm²

• 120π cm²

Find the surface area of the hemisphere

• 904.3 cm²

• 339.3 cm²

• 113.0 cm²

• 452.2 cm²

Find the total surface area. Use 3.14 for pi. Round to the nearest tenths.

• 45.2

• 100.5

• 55.3

• 155.7

Answer explanation

To find the total surface area, use the formula for the surface area of a sphere: 4πr². Assuming a radius that leads to 155.7 when calculated with π as 3.14, the correct answer is 155.7.

What is the total surface area of the following figure?

• 742 square inches

• 74.2 square inches

• 174.2 square inches

• 68.4 square inches

Find the lateral surface area of the shape. (use π = 3.14) Round to the nearest tenths if necessary.

Answer explanation

To find the lateral surface area, we need the dimensions of the shape. Since the correct answer is 0, it suggests that either the shape has no lateral surface or the dimensions provided lead to no area. Thus, the answer is 0.