Question

9 cm

13 cm

5 cm

O

O

12 cm

A wedge of cheese is shaped like a triangular prism. How much plastic wrap is needed to cover the wedge of
cheese?

(1 point)

810 cm2

287 cm2

330 cm2

O 240 cm2

O Search

Answer 1

The triangular end is a 5–12–13 right triangle, so its area = 1/2·5·12 = 30 cm². Two ends: 2·30 = 60 cm².
Perimeter of triangle = 5+12+13 = 30 cm; prism length = 9 cm, so lateral area = 30·9 = 270 cm².
Total surface area = 60 + 270 = 330 cm².

Answer: 330 cm².