Question

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​

Answer 1

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