Question

the length of a rectangle is three time it's width . it the perimeter is 84 metre find the length of the triangle triangle rectangle...​

Answer 1

Answer:

31.5m

Step-by-step explanation:

let us take the width as x.

length is 3x as it is 3 times width

perimeter of a rectangle=2 (l+b)

perimeter= 84 m

2 ( 3x+x) =84

2 * 4x = 84

8x = 84

x= 84/8

x=10.5

length of rectangle is 3x= 3* 10.5= 31.5

Length of rectangle is 31.5