Question

A rectangle has a perimeter of 48 cm. If the length is three times as long as it's breadth, then find it's length and breadth.

Answer 1

Heya ✋

Let see your answer !!!!

Let the breadth of a rectangle be (x) cm. Then,

it's length = (3x) cm

Perimeter of a rectangle = 2(l + b)

=> 48 = 2(3x + x)

=> 48/2 = 4x

=> 24 = 4x

=> x = 24/4

=> x = 6

Hence , the breadth of a rectangle = 6 cm

and it's length = (3 × 6) cm

= 18 cm










Thanks :))))

Answer 2

length=3breadth=3b
breadth=b
perimeter=48cm

perimeter=2(length+breadth)
48=2(3b+b)
48=2×4b
48/8=b
breadth=6cm

length=3b
length=3×6
length=18cm