Question

How do you do this?

Answer 1

Explanation:

Answer 2

`210cm^(2)`

Explanation:

The surface area is equal to 2(ab+ac+bc)

where ab, ac and bc are the lengths of the three sides given

Height (a) = 5cm

width(b) = 80mm = 8cm

Depth (c) = 5cm

2((5*8)+(5*5)+(8*5))

2(40+25+40)

2(105)

210