Question

one side of a rectangle is 3 centimeters more than twice the other side.If the perimeter of the rectangle is 42 centimeters,then its area is?​

Answer 1

Step-by-step explanation:

let a side of a rectangle

a= x

than other side

b =x +3

than perimeter = 42 cm

so

2(x+x+3)=42

x= 9

so a= 9 cm

b = 9+3=12 cm

so area of rectangle = ab

= 9×12

108 square centimeter