Question

The area of a rectangle is 180 cm². If its length is 15 cm, them the ratio of its breadth to its length is​

Answer 1

Answer:

REQUIRED RATIO IS 4 : 5

Step-by-step explanation:

$area = lb = 180 \: \: ....(i) \\ \\ l = 15 \: cm \\ \\ b = \frac{180}{15} = 12 \: cm \\ \\ therefore \: \: \: \frac{b}{l} = \frac{12}{15} = \frac{4}{5} .$

Answer 2

Explanation:

Given:

1. The area of a rectangle is 180 cm²

2. The length is 15 cm

To find:

The ratio of its breadth to its length

Formula:

Area of Rectangle = l×b

Solution:

==> Area of rectangle is given

==> Length is given

==> Area = 180cm²

==> length = 15cm

==> Apply the values in the formula

==> Area =  l×b

==> Area = 15×b

==> 180 = 15×b

==> b = 180÷15

==> b = 36÷3

==> b = 12

==> The breadth of the rectangle is 12cm

==> To find Ratio

==> l:b = 15:12

==> 15 and 12 are divisible by 3

==> l:b = 5:4

==> The ratio of breadth and length is 5:4