Question

the perimeter of a painting is 270 cm .it is 90 cm in height .how wide is it ?

Answer 1

Answer:

45 cm

Step-by-step explanation:

w = P/2 - l

w = 270 cm / 2 - 90 cm

w = 135 cm - 90 cm

w = 45 cm

Hope this helps you.

Answer 2

Answer:

perimeter of the painting= 270 cm

height of the painting= 90 cm.

width=?

let the width be x

=> perimeter if a rectangle= 2(l+b)

=> 2 (90+x) = 270

=> 180+ 2x= 270

=> 270-180= 2x

=> 90= 2x

=> x= 45

the painting is 45 cm wide.

hope it helps