Question

A rectangle measures 40 cm at its length and 20 cm at its width.A similar rectangle measures 45 cm at its width what is the length

Answer 1

Answer:

let the length of the rectangle be X

given that both the rectangles are similar

so,

perimeter of first rectangle=perimeter of second rectangle

=2(l+b)=2(l+b)

=2(40+20)=2(X+45)

=2*60=2x+90

=120=2x+90

=120-90=2x

=30=2x

=15=X

Therefore the length of the rectangle=15cm

hope it helps you