Question

evalute the length of a rectangle is 1\3 of its breath if its perimeter is 64 m then find the length the breath of the rectangle​

Answer 1

Answer:

Let length of rectangle=lcm

breadth of rectangle= bcm

Given length is 3 times its breadth

i.e. l= 3×b

Perimeter of the rectangle= 120 cm

i.e.2×( l+ b)=120

2×(3×b+ b)=120

2×(4×b)=120

8×b=120

b= 15 cm

Answer 2

Answer:

Let the length of the rectangle be ‘3’ units.

Thus, the width = (1/3) x 3 = 1 unit.

The perimeter in that case would be = 2 x (1+3) = 8 units.

Now, as per the question,

8 corresponds to 100,

So 1 (width) corresponds to => 100/8 x 1 = 12.5 cm

And Length = 3 x 12.5 = 37.5 cm.

Thus, area is 37.5 x 12.5 = 468.75 sq. cm.

Hope this helps! :)