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

Answer:

$b=\frac{2A}{h}$

Step-by-step explanation:

∵ Area of a triangle,

$A=\frac{1}{2} bh---(1)$

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 $\frac{1}{2}h$

We get,

$\frac{A}{\frac{1}{2}h}=b$

$\frac{2A}{h}=b$

Hence, SECOND option is correct.

Answer 2

Answer:

B

Step-by-step explanation:

B