The perimeter of a rectangle is 42 cm. The width is 7 cm less than the length.
2 answers:
Answer:
<h2>Length = 14</h2><h2>Width =7</h2>
Step-by-step explanation:
Answer: length = 14cm width= 7cm, Area = 98cm^2
Explanation:
First let’s find the semi perimeter of the rectangle:
Semi. = P/2
Semi. = 42/2
Semi. = 21
Find length:
L + L - 7 = 21 (L - 7 is the width)
2L - 7 = 21
2L = 28
L = 28/2
L = 14
Find width:
Width is L - 7
But L is 14
W = 14 - 7
W = 7
Find area:
A = LW
A = 14 x 7
A = 98cm^2
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