Area and Perimeter Practice

The area of a rectangle is calculated using the formula: $$Area = b \cdot h$$ , where 'b' is the base and 'h' is the height.

The expression that would not help find the area of a rectangle is: 5 + 10.

To calculate the perimeter of a triangle, add the lengths of all three sides.

The perimeter is calculated as: $$P = 2(l + w) = 2(20 + 8) = 56 in$$ .

The area is calculated as: $$Area = l \cdot w = 10 \cdot 5 = 50 m^2$$ .

The perimeter of a rectangle is calculated using the formula: $$P = 2(l + w)$$ , where 'l' is the length and 'w' is the width.

The area is calculated as: $$Area = \frac{1}{2} \cdot b \cdot h = \frac{1}{2} \cdot 10 \cdot 5 = 25 cm^2$$ .

The area of a circle is calculated using the formula: $$Area = \pi r^2$$ , where 'r' is the radius.

The perimeter is calculated as: $$P = 4 \cdot s = 4 \cdot 4 = 16 in$$ .

The area is calculated as: $$Area = l \cdot w = 12 \cdot 3 = 36 yd^2$$ .