Question

How do you do this? could you also explain

Answer 1

The area of the triangle is B. 12

Explanation:

Area of a triangle is (base × height) ÷ 2 =
`(bh)/(2)`

So..

`(bh)/(2)`

=
`((3)(8) )/(2)`

=
`(24)/(2)`

= 12

Answer 2

B. 12

Explanation:

1. The area of a triangle is equal to
`(bh)/(2)`.

• -> b = base
• -> h = height

2. Since we're given the base, line mn, as 3 and the height as 8, let's apply the formula that was aforementioned.

• 
  `((3)(8))/(2)`
• 
  `(24)/(2)`
• 
  `12`

Therefore, the answer is B. 12.