Question

(20 points)

Arianne is taking a geometry course and is working with the area of triangles. She knows the area and the height but needs to find the base. Rearrange the following equation for b, where A is the area, b is the base, and h is the height of the triangle.

A = 1/2bh

b = 2A − h
b = 2A/h
b = 2A + h
b = 2Ah

Answer 1

B

Explanation:

B

Answer 2

`b=(2A)/(h)`

Explanation:

∵ Area of a triangle,

`A=(1)/(2) bh---(1)`

Where,

b = base of the triangle,

h = height of the triangle,

For finding the formula for b we need to isolate b in equation (1),

For this divide both sides by
`(1)/(2)h`

We get,

`(A)/((1)/(2)h)=b`

`(2A)/(h)=b`

Hence, SECOND option is correct.