If  the length and the breadth of a rectangle are in the ratio of 7 : 4 and its area is 12348 $$cm^2$$, what will be the length of the rectangle?​

Correct option is B

Given:

The length and the breadth of a rectangle are in the ratio of 7 : 4 

 Area = 12348 cm²,

Formula used:

Area of a rectangle = Length × Breadth

Solution:

Let the common ratio be Q

Hence, length = 7Q and breadth = 4Q

According to the question,

7Q × 4Q = 12348

=> Q² = 441

=> Q = 21

=> 7Q = 147

∴ The length of the rectangle is 147cm.