Q26 of 69 Page 240

If each side of an equilateral triangle is 8cm long, then its area is cm².

It is given in the question that,

Each side of an equi8lateral triangle = 8 cm

Area of an equilateral triangle =

= 16 cm²

Hence, the given statement is false

The question consists of two statements namely, Assertion (a) and Reason (R). Please select the correct answer.

Assertion (A)	Reason (R)
The area of an isosceles triangle having base = 24 cm and each of the equal sides equal to 13cm is 60cm².	If 2s = (a + b+ c) where a, b, c are the sides of a triangle, then area = .

If the base of an isosceles triangle is 6cm and its perimeter is 16cm, then its area is 12cm².

If the sides of a triangular field measures 52m, 37 m and 20 m, then the cost of leveling at Rs 5 per m² is Rs 1530.

Match the following columns.

Column I	Column II
(a) The lengths of three sides of a triangle are 26 cm, 28 cm and 30cm. The height corresponding to base 28cm is……cm	(p) 6
(b) The area of an equilateral triangle is cm². The perimeter of the triangle is…..cm	(q) 4
(c) If the height of an equilateral triangle is cm, then each side of the triangle measures …. Cm	(r) 24
(d) Let the base of an isosceles triangle be 6 cm and each of the equal side be 5cm. Then, its height is ….cm	(s) 12

The correct answer is :

(a)-…….. (b)-……..

(c)-……… (d)-………

If each side of an equilateral triangle is 8cm long, then its area is cm2.