Question

5. The area of an equilateral triangle of
side 40 cm is
(1) 100/3 cm?
(2) 160/3 cm2
(3) 20013 cm?
(4) 400/3 cm2​

Answer 1

Answer:

area of equilateral∆=√3/4(side)²

=√3/4*(40)²

=√3/4*40*40

=400√3

option 4

Answer 2

AREA=

$\sqrt{3} \div 4 \times {40}^{2} \\ \sqrt{3} \times 16000$