Question: User: A=1/2bh solve for b
1. **State the problem:** We are given the formula for the area of a triangle $$A=\frac{1}{2}bh$$ and asked to solve for the base $$b$$.
2. **Write the formula:** $$A=\frac{1}{2}bh$$
3. **Isolate $$b$$:** To solve for $$b$$, multiply both sides by 2 to eliminate the fraction:
$$2A=\cancel{2} \times \frac{1}{\cancel{2}}bh = bh$$
4. **Divide both sides by $$h$$:**
$$\frac{2A}{h} = \frac{bh}{h} = b$$
5. **Final formula:**
$$b=\frac{2A}{h}$$
**Explanation:** We multiplied both sides by 2 to get rid of the fraction, then divided both sides by $$h$$ to isolate $$b$$. This gives the base in terms of the area and height.