Area of 2-D Figures (Quick)

Front

What is the formula for the area of a trapezoid?

Back

The area of a trapezoid is given by the formula: \( A = \frac{1}{2} (b_1 + b_2) h \), where \( b_1 \) and \( b_2 \) are the lengths of the two parallel sides and \( h \) is the height.

Front

What is the formula for the area of a parallelogram?

Back

The area of a parallelogram is calculated using the formula: \( A = b \times h \), where \( b \) is the base and \( h \) is the height.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: \( A = \frac{1}{2} b h \), where \( b \) is the base and \( h \) is the height.

Front

What is the formula for the area of a square?

Back

The area of a square is calculated using the formula: \( A = s^2 \), where \( s \) is the length of a side.

Front

What is the area of a rectangle with length 5 cm and width 3 cm?

Back

The area of the rectangle is \( A = l \times w = 5 \times 3 = 15 \text{ cm}^2 \).

Front

What is the area of a circle with a radius of 4 cm?

Back

The area of a circle is given by the formula: \( A = \pi r^2 \). For a radius of 4 cm, \( A = \pi (4)^2 = 16\pi \text{ cm}^2 \).

Front

How do you find the area of a trapezoid with bases of 10 cm and 6 cm, and a height of 4 cm?

Back

Using the formula \( A = \frac{1}{2} (b_1 + b_2) h \), we have \( A = \frac{1}{2} (10 + 6) \times 4 = 32 \text{ cm}^2 \).

Front

What is the area of a parallelogram with a base of 8 cm and a height of 5 cm?

Back

Using the formula \( A = b \times h \), the area is \( A = 8 \times 5 = 40 \text{ cm}^2 \).

Front

What is the area of a triangle with a base of 10 cm and a height of 6 cm?

Back

Using the formula \( A = \frac{1}{2} b h \), the area is \( A = \frac{1}{2} \times 10 \times 6 = 30 \text{ cm}^2 \).

Front

What is the area of a square with a side length of 7 cm?

Back

Using the formula \( A = s^2 \), the area is \( A = 7^2 = 49 \text{ cm}^2 \).