Question

Q.5 The perimeter of an
equilateral triangle is 60 m. The
area is
O (a) 1073 m2
O (b) 1573 m2
O (c) 2013 m2
O (d) 100V3 m2​

Answer 1

Step-by-step explanation:

Perimeter = 60.

Length of a Side = 60 /3 = 20

Area by heros formula

$area = \sqrt{30(30 - 20)(30 - 20)(30 - 20)}$

173.20

Answer 2

Step-by-step explanation:

solution : let each side of an equlateral be x

then , perimeter of an equilateral triangle =60 m

x + x + x = 60 =3x =60 =x60/3 =20 m

Area of an equlateral triangle =root3/4 (side)2

=root 3/4 ×20 ×20 = 100root3msquare

thus , the area of triangle is 100 root 3msquare

answer = D option