1. The length of a rectangle is 3 cm. more than its width. What are the dimensions of the
rectangle if its perimeter is 42 cm?
b 3 cm and 42 cm c. 12 cm and 15 cm d. 8 cm and 12 cm
Answers
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Step-by-step explanation:
let breadth be x
length =x+3
perimeter of rectangle =2(l+b)
=2[ (x+3)+x]
34=2x+6+2x
34-6=4x
28=4x
x=28/4
x=7
therefore breadth =7cm
length =x+3=7+3=10cm
dimentions of rectangle =√w^2+l^2
=√7^2+10^2
=√49+100
=√149
=12.2
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