Question

Work out the area of a rectangle with base, b = 22mm and perimeter, P = 64mm.
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Answer 1

Step-by-step explanation:

Given

Base (b) = 22 mm

Perimeter (P) = 64 mm

Area (A) = ?

Now first calculating The length

2( L + b) = 64

2 ( L + 22) = 64

2L + 44 = 64

2L = 64 - 44

2L = 20

Therefore L = 10 mm

Now

Area = L * b

= 10 * 22

= 220 mm²

Answer 2

Answer:

$22 \times 2 = 44 \\ 64 - 44 = 20 \\ width = 20 \div 2 = 10 \\ area = 22 \times 10 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 220 {mm}^{2}$