The area of a square is thrice the area or a rectangle. If the area of the square is 225 cm and the length of the rectangle is 15 cm. what is the difference between the breadth of the rectangle. and the side of the square ?

Options

A. 8 cm
B. 10 cm
C. 12 cm
D. 16 cm

Answer

B

Explanation

Area of rectangle `=225/3=75` sq cm
`:. " Breadth of rectangle "=(" Area ")/("Length")=75/15=5 cm`
Side of the square `=sqrt("Area")=sqrt225=15 cm`
Required difference `=(15-5)-10cm`