the perimeter of o rectangle is 20 cm and width is 3/4cm.find it's l
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Answer:
length = 37
Step-by-step explanation:
Perimeter of the rectangle = 20cm
Formula for finding out the perimeter of a rectangle = 2( l + b )
Width = 3/4cm
So length = 2( l + b )
=> 2 ( l + 3/4 ) = 20
=> 2l + 3/2 = 20
=> 2l = 20 - 3/2
=> 2l = 40 - 3 / 2
=> 2l = 37 / 2
=> l = 37 / 2 x 2
=> l = 37
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