Question

# The length of a rectangle is three times of its width. If the length of the diagonal is 8√10 cm, then the perimeter of the rectangle is: 65 cm 15√10 cm 16√10 cm 24√10 cm 64 cm

Solution

## The correct option is E 64 cm Let breadth = x' cm. Then, length = 3x' cm. x2+(3x)2=(8√10)2⇒10x2=64⇒x=8 So, length = 24 m and breadth = 8 cm ∴ Perimeter = [2 (24+8)] cm = 64 cm.

Suggest corrections

1 Upvotes

Similar questions
View More

People also searched for
View More