Question

the length of a rectangle is three times its breadth find the expression for its perimeter and area given that the breadth is b cm.

Answer 1

Answer:

Step-by-step explanation:

breadth is b thereafore length is 3b   2(b+3b)=2b+6b

Answer 2

The expression for its perimeter and area are 8b and $3b^2$ respectively.

Step-by-step explanation:

Let the breadth of rectangle be b

We are given that the length of a rectangle is three times its breadth

So, Length = 3b

Perimeter of rectangle = 2(l+b)=2(3b+b)=8b

Area of rectangle = $Length \times Breadth = 3b \times b= 3b^2$

Hence the expression for its perimeter and area are 8b and $3b^2$ respectively.

#Learn more:

Length of a rectangle is three times its breadth. Perimeter of the rectangle is 272 Find its length and breadth?

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