Area Formulas

Area Formulas

Multiple Choice

Which of the following is the correct formula for finding the area of a circle3?

• A = 2πr
• A = 0.5πr^2
• A = 3πr
• A = πr^2

Multiple Choice

What does r^2 mean?

• (r x r)

• (r x 2)

• (r + r)

Parts of a Circle

Multiple Choice

Is this a picture of the diameter or the radius of a circle?

• diameter

• radius

Multiple Choice

Is this the diameter or the radius of a circle?

• diameter

• radius

Multiple Choice

What part of the circle is the circumference?

• Diameter
• Area
• Radius
• Perimeter (outside of the circle)

Multiple Choice

Which of the following is the correct formula for finding the circumference of a circle using diameter?

• C = d^2
• C = π * d
• C = 0.5 * d
• C = 2 * d

Multiple Choice

Which of the following is the correct formula for finding the circumference of a circle using the radius?

• radius * radius
• π * radius
• 2 * radius
• 2 * π * radius

Multiple Choice

Which of the following is a picture of a trapezoid?

• C

• D

• B

• A

Multiple Choice

Which of the following is the correct formula for finding the area of a trapezoid?

• (1/2) x (sum of the lengths of the two parallel sides) x (height)

• (sum of the lengths of the two parallel sides) x (height)

• (1/2) x (difference of the lengths of the two parallel sides) x (height)

• 2 x (sum of the lengths of the two parallel sides) x (height)

Multiple Choice

Which of the following is the correct formula for finding the area of a prism?

• 2 x (base area) + (perimeter of base) x (height)

• 2 x (base area) + (perimeter of base) x (volume)

• 2 x (base area) + (perimeter of base) x (depth)

• 2 x (base area) + (perimeter of base) x (width)

Multiple Choice

Which of the following is a picture of a rhombus?

• C

• D

• B

• A

Area Formula for a Rhombus

A = d1 x d2
2

Multiple Choice

Which of the following is the correct formula for finding the area of a rhombus?

• d1 + d2

• d1 * d2

• d1^2 + d2^2

• (d1 * d2) / 2