Question

A rectangle has a perimeter of 40 cm make an equation if its length is x-5cm and the breadth is 8cm.find x

Answer 1

Answer:

x = 17 cm

Step-by-step explanation:

we know perimeter of rectangle = 2*(breadth + length)

so , 40 = 2*[ x-5 + 8 cm]

so, 20 = x+3

so, x =17 cm

Answer 2

Answer:

17cm

Step-by-step explanation:

we know that the perimeter is 40cm

the perimeter of a rectangle=2*(b+l)

so,40=2*(x-5+8cm)

20=x+3

x=17cm is the answer