Semicircle Area and Perimeter Problems

This video tutorial from EAS Engineering teaches how to calculate the perimeter and area of a semicircle. It begins with an introduction to semicircles, explaining that they are half of a circle. The tutorial then covers the formulas for calculating the perimeter and area, providing step-by-step instructions and examples. Viewers are given practice problems to solve, reinforcing the learning objectives. The video concludes with a summary and encouragement to explore more tutorials.

What is a semicircle?

• A quarter of a circle

• A triangle

• Half of a circle

• A full circle

What is the special name for the perimeter of a circle?

• Radius

• Circumference

• Arc

• Diameter

How do you calculate the perimeter of a semicircle?

• Diameter of a circle

• Half the circumference of a circle plus diameter

• Circumference of a circle plus radius

• Half the circumference of a circle

If a semicircle has a diameter of 16 inches, what is its perimeter?

• 50 inches

• 41.2 inches

• 32 inches

• 25.12 inches

What is the formula for the area of a circle?

• Pi times diameter

• Pi times radius squared

• Pi times diameter squared

• Pi times radius

How is the area of a semicircle related to the area of a circle?

• It is one-fourth the area of a circle

• It is half the area of a circle

• It is double the area of a circle

• It is the same as the area of a circle

What is the area of a semicircle with a radius of 8 inches?

• 50.24 square inches

• 10.48 square inches

• 100.48 square inches

• 25.12 square inches

For a semicircle with a diameter of 14 cm, what is the perimeter?

• 50 cm

• 35.9 cm

• 28 cm

• 44 cm

What is the radius of a semicircle if its diameter is 14 cm?

• 7 cm

• 14 cm

• 28 cm

• 21 cm

Calculate the area of a semicircle with a diameter of 14 cm.

• 76.93 square cm

• 153.86 square cm

• 100 square cm

• 38.47 square cm