Question

Find the length of rectangle whose perimeter is 40 metres whose area 96 square metres (in metres)

Answer 1

Answer:

perimeter=

2(l+b)=40

l+b=20

area = lb= 96m²

Step-by-step explanation:

l-b=√{(l+b)²-4lb}=√(20²-4×96)=√16=4

l+b=20

2l=24

l=12

so length is 12 cm