Aptitude : : Area Questions & Answers

  1. The diagonals of a rectangle is √41 cm and its area is 20 sq. cm. The perimeter of the rectangle must be:

A. 9 cm

B. 18 cm

C. 20 cm

D. 41 cm

  1. If the length of the diagonal of a square is 20 cm, then its perimeter must be :

A. 10√2 cm

B. 40 cm

C. 40√2 cm

D. 200 cm

  1. The area of a square field is 69696 $cm^2$. Its diagonal will be equal to

A. 313.296 cm

B. 353.296 cm

C. 373.296 cm

D. 393.296 cm

  1. What will be the length of the diagonal of that square plot whose area is equal to the area of a rectangle plot of length 45 m and breadth 40 meters?

A. 42.5 m

B. 60 m

C. 75 m

D. 80 m

  1. The length of a rectangle is halved , while its breadth is tripled , what is the percentage change in area?

A. 40%

B. 50%

C. 60%

D. 70%