Question

A) Find the area of each face .
b) Calculate the surface area of this rectangular prism .

Answer 1

a)

Area of green=28

Area of purple=21

Area of red=12

b)122

Explanation:

a)area of green=4×7=28

area of purple=3×7=21

area of red=4×3=12

b)S.A=2green+2purple+2red

=2(28)+2(21)+2(12)

=56+42+24

=122