Question

Q11. The perimeter of a room is 19.50 meters. The length
of the room is 6.5 m, find its area.​

Answer 1

Answer:

21.125 sq. m

Step-by-step explanation:

Perimeter = 2(l + b) = 19.5 m

l = 6.5 m

So,

2(l + b) = 19.5

2(6.5 + b) = 19.5

13 + 2b = 19.5

2b = 6.5

b = 3.25

Breadth = 3.25 m

Area = Length × Breadth = 6.5 × 3.25 sq. m = 21.125 sq. m

Answer 2

Answer:

591.5 is area and 91 is breadth

explanation

2 × l+b = perimeter

19.50 = 2 × l+b

19.50÷2 = l+b

97.5 = 6.5+b

97.5 - 6.5 = b

b = 91

area = l×b = 91×6.5=591.5