Question

a rectangular solid has sides of 7cm, 9cm, and 11 cm. what is the surface area?

Answer 1

Answer: 478

Step-by-step explanation:

Surface area = 2(lb+bh+hl)

= 2(7*9+9*11+11*7)

= 2(63+99+77)

= 2(239)

= 478 square units