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The perimeter of a rectangle in which b=4 cm and A=28 cm

0 votes

Find the measurement.

perimeter-of-a-rectangle

asked Feb 18, 2014 in GEOMETRY by rockstar Apprentice

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1 Answer

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Rectangle area A = l*b = 28cm^2

Given b = 4cm

4l = 28

Divide to each side by 4.

4l/4 = 28/4

l = 7cm

Perimeter of rectangle = 2(l+b)

= 2(7+4)

= 2*11

= 22 cm

answered Feb 18, 2014 by david Expert

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