Question

Work out the area of a rectangle with base,
b
= 40mm and perimeter,
P
= 94mm.
how would i calculate this?

Answer 1

Step-by-step explanation:

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Answer 2

Breadth = 40 mm

Let the length be = x

Perimeter of rectangle = 94 mm

2(l + b) = 94

2(x + 40) = 94

(x + 40) = $\frac{94}{2}$

(x + 40) = 47

x = 47 - 40

x = 7

∴ Length = 7 mm

Area of rectangle = $l * b$

                             = $7 * 40$

                             = 280

∴ Area of rectangle = 280 $mm^{2}$