Q2 of 39 Page 212

Find the area of an equilateral triangle of side 6 cm.

Given


Side length of equilateral triangle is 6 cm


We know that area of the equilateral triangle is given by a2,where a is side length


Therefore area of the triangle is


⇒ × 62 = × 36 = × 9 = .


More from this chapter

All 39 →
5

In the given figure, AB||DC and DA AB If cm, cm, cm and CL AB the area of trap. ABCD is

 1

The base of a triangular field is three times its height and its area is 1350 m2. Find the base and height of the field.

 3

The perimeter of a rhombus is 180 cm and one of its diagonals is 72 cm. Find the length of the other diagonal and the area of the rhombus.

 4

The area of a trapezium is 216 m2 and its height is 12 m. If one of the parallel sides is 14 m less than the other, find the length of each of the parallel sides.