Question

find the perimeter of a rectangle whose length is 3 times its breadth find its length if its breadth is 3 ½ meters. don't forget to write the perimeter.​

Answer 1

Answer:

perimeter of rectangle is 28m

Step-by-step explanation:

given that:

length of a rectangle is 3 times its breadth

let the length be L

according to given statement, L= 3B

where B = breadth of rectangle

also given that:

breadth of rectangle is 3 ½ meters  = 3+1/2 = (3+0.5)m = 3.5m

so B= 3.5m

from L=3B;

L= (3)(3.5)m

L= 10.5m

so length L and breadth B of a given rectangle are 10.5 m and 3.5m respectively.

formula for perimeter of a rectangle = 2(L+B)

⇒ 2(10.5 + 3.5)m

⇒ 2(14)m

⇒ 28m

so perimeter of rectangle is 28m

Answer 2

Answer:

28m

Step-by-step explanation:

Formula: Length = Perimeter/

2﹣Width

given that:

length of a rectangle is 3 times its breadth

let the length be L

according to given statement, L= 3B

where B = breadth of rectangle

also given that:

breadth of rectangle is 3 ½ meters  = 3+1/2 = (3+0.5)m = 3.5m

so B= 3.5m

from L=3B;

L= (3)(3.5)m

L= 10.5m

so length L and breadth B of a given rectangle are 10.5 m and 3.5m respectively.

formula for perimeter of a rectangle = 2(L+B)

⇒ 2(10.5 + 3.5)m

⇒ 2(14)m

⇒ 28m

So perimeter of rectangle is 28m

Hope it helps!