Area of Polygons

$$A = \frac{1}{2}bh$$ where A is the area, b is the base, and h is the height.

$$A = l \times w$$ where A is the area, l is the length, and w is the width.

The amount of space inside a shape.

$$A = \frac{1}{2}(b_1 + b_2)h$$ where A is the area, b_1 and b_2 are the lengths of the two parallel sides, and h is the height.

$$A = s^2$$ where A is the area and s is the length of a side.

$$A = \frac{1}{4}\times \text{π}d^2$$ or $$A = \text{π}r^2$$ where d is the diameter and r is the radius.

$$A = b \times h$$ where A is the area, b is the base, and h is the height.

Area measures the space inside a shape, while perimeter measures the distance around a shape.

$$A = \frac{1}{2} \times 10 \times 5 = 25 \text{ cm}^2$$ .

$$A = 12 \times 15 = 180 \text{ in}^2$$ .