Question

Measure of each side of an equilateral triangle is 12cm. It's area is given by

A) 9 root3
B)18 root3
C)27 root3
D) 36 root 3
Please help fast

Answer 1

D

Explanation:

The area (A) of an equilateral triangle is calculated as

A =
`(s^2√(3) )/(4)` ← s is length of a side

Here s = 12, thus

A =
`(12^2√(3) )/(4)`

=
`(144√(3) )/(4)`

= 36
`√(3)` → D