Area With Different Dimensions

Find the surface area of the solid. Do not round your answer.

A triangle has a base of 12 feet and a height of 8 feet. By how much does the height need to increase for the area to increase by 4.5 square feet?

The owner of a sports complex wants to carpet a hallway connecting two buildings. The carpet costs $1.50 per square foot. How much does it cost to carpet the hallway?

One gallon of paint covers 400 square feet. What is the least amount of paint needed to paint the walls of a room in the shape of a rectangular prism with a length of 20 feet, a width of 18 feet, and a height of 12 feet?

Find the height of the trapezoid.

What is the area of the base?

A mini game cube is covered in different colors and has a side length of 1.8 inches. Which of the following would represent the amount of space covered in various colors?

• 116.64 sq in

• 3.24 sq in

• 19.44 sq in

• 10.8 sq in

A net of a building block is shown in the picture. What is the total surface area of the building block?

• 120 sq cm

• 108 sq cm

• 96 sq cm

• 84 sq cm

Find the total surface are of the net.

• 8 sq cm

• 14.4 sq cm

• 28.8 sq cm

• 102.4 sq cm

A triangular prism is covered with foil. How much foil is necessary to cover the prism?

• 346.5 sq ft

• 336 sq ft

• 555 sq ft

• 247.5 sq ft