Q10 of 50 Page 12

If each side of an equilateral triangle is triples then what is the percentage increase in the area of the triangle?

When each side of triangle = a


Area of an equilateral triangle = = A


When each side of triangle = 3a


Area of an equilateral triangle = = = 9A


Increase in area = 9A-A = 8A


Percentage increase in area = = = 800%


More from this chapter

All 50 →
8

Let Δ be the area of a triangle. Find the area of a triangle whose each side is twice the side of the given triangle.

 9

If each side of a triangle is doubled, then find percentage increase in its area.

 1

The sides of a triangle are 16 cm, 30 cm, 34 cm. Its area is

 2

The base of an isosceles right triangle is 30 cm. Its area is