Answer:
24 cm, 21 cm
Step-by-step explanation:
Let the width of the rectangle be x cm
So, length = x + 3 cm
Perimeter of rectangle = 90
2(x + 3 + x) = 90
(2x +3) = 90/2
2x + 3 = 45
2x = 45 - 3
2x = 42
x = 42/2
x = 21 cm
x + 3 = 21 + 3 = 24 cm
Length = 24 cm
Width = 21 cm
Hence, dimensions of the rectangle are 24 cm and 21 cm.
