Question

17. The perimeter of a rectangle is 60 cm and the
area is 200 cm. Find the length?
(a) 10 cm
(b) 20 cm
(c) 16 cm
(d) 24 cm​

Answer 1

l×b = 200 ---------- 1

2l+2b = 60

l + b =30

l = 30-b

put l = 30 - b in equation 1

(30- b) b = 200

b=20 , 10

l= 10 , 20