Question

A square pyramid is shown. What is the surface area?

A square based pyramid, with bases labeled 2.5 centimeters and side length of triangle labeled 5 centimeters.

15.25 cm2
15.625 cm2
31.25 cm2
62.625 cm2

Answer 1

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

Answer 2

The area of the base is simply 2.5 * 2.5
TO find the area of the 4 triangles, find the height first.

Answer 3

i know it now c

Answer 4

Find that height, then Area of triangle is Half the base times the height
(0.5)*2.5*h

Answer 5

Use a net to find the surface area of the right triangular prism shown below:

Three rectangles next to each other with a width of 8 feet. The first and second rectangles length are unknown, and the last is 13 feet long. There are two right triangles above and below the last rectangle. One is labeled with a base of 5 feet and a height of 12 feet.

88 square feet

232 square feet

283 square feet

300 square feet

Answer 6

Area of Base = 2.5^2 = 6.25 cm^2

Area of 4 Triangles = 2 * (2.5) * 4.84 = 24.2 cm^3

Total Area= [6.25 + 24.2] cm^2 = 30.45 cm^2

Answer 7

Use a net to find the surface area of the right triangular prism shown below:

Three rectangles next to each other with a width of 8 feet. The first and second rectangles length are unknown, and the last is 13 feet long. There are two right triangles above and below the last rectangle. One is labeled with a base of 5 feet and a height of 12 feet.

88 square feet

232 square feet

283 square feet

300 square feet