Exploring Perimeter and Area of 2D Shapes

What is the formula for the perimeter of a rectangle?

• Perimeter = 2 * (Width + Length)

• Perimeter = Width * Length

• Perimeter = 2 * Width + Length

• Perimeter = Width + Length

If a rectangle's perimeter is 115 inches and the length is three times the width plus seven, what is the width?

• 48.625 inches

• 13.875 inches

• 22 inches

• 115 inches

How is the circumference of a circle calculated using the radius?

• Circumference = pi * radius^2

• Circumference = pi * diameter

• Circumference = 2 * radius

• Circumference = 2 * pi * radius

What is the area of a rectangle with a length of 9 mm and a width of 5 mm?

• 5 mm^2

• 45 mm^2

• 14 mm^2

• 9 mm^2

How do you calculate the area of a circle?

• Area = radius^2

• Area = pi * radius^2

• Area = 2 * pi * radius

• Area = pi * diameter^2

What is the formula for the area of a trapezoid?

• Area = (Base1 + Base2) * Height / 2

• Area = (Base1 + Base2) / Height

• Area = Base1 + Base2 + Height

• Area = Base1 * Base2 * Height

If a square's diagonal is 5 * sqrt(2) / 2, what is the area of the square?

• 3.125

• 6.25

• 12.5

• 25

What is the radius of a circle with an area of 7 square feet?

• 1.5 feet

• 3.0 feet

• 2.5 feet

• 1.0 feet

For a trapezoid with bases of 10 cm and 4 cm and height of 5 cm, what is the area?

• 45 cm^2

• 70 cm^2

• 35 cm^2

• 20 cm^2

What is the length of the mid-segment of a trapezoid with bases 10 cm and 4 cm?

• 7 cm

• 14 cm

• 5 cm

• 9 cm