Question

the perimeter of a rectangle is 81 m and breadth 12 m. Find its length and area​

Answer 1

Answer: length = 57/2 m

Area = 57/2×12=342 sq m

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Explanation: Let the length be x

2 (x+12)=81

2x+24=81

2x =57

X =57/2

Answer 2

Explanation:

perimeter=2(l+b)

81=2(l+12)

l+12=81/2=40.5

l=40.5-12 =28.5

length=28.5

area=l*b

28.5*12=342

area=342