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A rectangle has length triple of its breadth It has the area of is 120cm² find its length, Breadth and permiter .​

Sagot :

Answer:

The breadth is about 6.32cm and the perimeter is about 50.56cm.

Step-by-step explanation:

The formula for the area of a rectangle is l * w = A, where l is the length, w is the width or breadth, and a is the area. If the length is 3 times the width, it can be written as 3w. This can be substituted into the formula along with the area to get 3w * w = 120, or 3w^2 = 120. Then it could be solved as an equation.

(3w^2)/3 = 120 / 3

w^2 = 40

w ~ 6.32

Then 6.32 can be multiplied by 3 to find the length, whch is 18.96. The formula for the perimeter of a rectangle is 2(l + w) = P.

2(6.32 + 18.96) = P

2(25.28) = P

50.56 = P