Question

Find the surface area of the triangular prism.

12 in
15 in
20 in
9 in.
The surface area is ?
square inches.

Answer 1

Answer:
720 square inches.
Explanation: To find the surface area of a triangular prism, we need to find the area of each face and add them together.
The triangular bases have base 12 in and height 15 in, so the area of each is:

(1/2) x 12 in x 15 in = 90 in²

The rectangular faces have dimensions 20 in x 15 in and 20 in x 12 in, so their areas are:
20 in x 15 in = 300 in² 20 in x 12 in = 240 in² Adding these up, we get: 2 x 90 in² + 300 in² + 240 in² = 720 in²

the surface area of the triangular prism is 720 square inches.

Answer 2

720 square inches.

Explanation:

To find the surface area of a triangular prism, we need to find the area of each face and add them together.

The triangular bases have base 12 in and height 15 in, so the area of each is:

(1/2) × 12 in × 15 in = 90 in²

The rectangular faces have dimensions 20 in × 15 in and 20 in × 12 in, so their areas are:

20 in × 15 in = 300 in²

20 in × 12 in = 240 in²

Adding these up, we get:

2 × 90 in² + 300 in² + 240 in² = 720 in²

the surface area of the triangular prism is 720 square inches.