Multiple choice

The base of a right prism is triangle whose sides are 5 cm, 8 cm and 12 cm. Find the lateral surface area of the right prism, if it’s height is 18 cm?

  1. 432

  2. 486

  3. 468

  4. 450

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

For a right prism with triangular base, lateral surface area = perimeter of base × height of prism. The base is a triangle with sides 5, 8, 12 cm. Perimeter = 5 + 8 + 12 = 25 cm. Height of prism = 18 cm. Lateral surface area = 25 × 18 = 450 cm².