Area Formulas

The area of a circle is given by the formula $$A = \frac{\text{Area}}{r} = \text{π} \times r \times r$$ , where r is the radius.

The area of a semicircle is given by the formula $$A = \frac{\text{Area}}{2} = \frac{\text{π} \times r \times r}{2}$$ , where r is the radius.

The area of a rectangle is given by the formula $$A = l \times w$$ , where l is the length and w is the width.

The area of a trapezoid is given by the formula $$A = \frac{(b_1 + b_2) \times h}{2}$$ , where b_1 and b_2 are the lengths of the two parallel sides and h is the height.

The area of a parallelogram is given by the formula $$A = b \times h$$ , where b is the base and h is the height.

Area is the measure of the amount of space inside a two-dimensional shape, typically measured in square units.

The diameter of a circle is twice the length of the radius, expressed as $$d = 2r$$ .

The area of a square is calculated using the formula $$A = s \times s$$ , where s is the length of one side.

The area of a rhombus can be calculated using the formula $$A = \frac{d_1 \times d_2}{2}$$ , where d_1 and d_2 are the lengths of the diagonals.

The area of a triangle is given by the formula $$A = \frac{b \times h}{2}$$ , where b is the base and h is the height.