Question

the sides of a rectangle are in the ratio 4:5 and its perimeter is 180cm, what are the measurements of the sides?

Answer 1

Answer:

let the number be four be 4x

let the number 5 be 5x

perimeter of ractangle is 2 ( l plus b )

180 is equal to 2 ( 4 x plus 5 x )

180 is equal to 2 ( 9 x )

180is equal to 18 x

x is equal to 180/ 9 is equal to 20

4 x is equal to 4 * 20 is equal to 80

5 x is equal to 5 * 20 is equalto 100

Answer 2

Step-by-step explanation:

Let the sides of the rectangle be 4x and 5x respectively.

A/q,

$\mathtt{4x+5x=180}$

$\mathtt{9x=180}$

$\mathtt{x=\Large\frac{180}{9}}$

$\mathtt{x=20}$

$\texttt{Hence, the first side of the rectangle = 4x = 4×20 = 80 }$

$\texttt{\& the length of the second side = 5x = 5×20 = 100 }$