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Quiz Discussion

Title: Area of a circle

Grade: 8-a Lesson: S4-L4

Explanation: Hello students, let us discuss few problems on this topic with steps and answers provided for each problem.

Quiz: Discussion in Class

Problem Id	Description	Answer
Steps 1	A tin of paint has a diameter of 9.5cm. What is the area of the top of the tin? (Use π = 3.14)	70.84 cm²
Steps 2	Rachel is building a circular pond in her garden. The radius of the pond is 5 meters. Find the area of the pond.(Use π = 3.14)	78.5 m²
Steps 3	The circumference of a circular disc is 62.8 cm. Find its area.(Use π = 3.14)	314 cm²
Steps 4	The circumference of a circle is 44 cm. Find the area(approximately) of the circle if the radius is 7 cm.	154.14 cm²
Steps 5	A circular garden with a diameter of 24 centimeters is surrounded by a walkway of width 4 centimeters. Find the area of the walkway.	351.68 cm²

Problem Id

Description

Image

Answer

Steps 1

A tin of paint has a diameter of 9.5cm. What is the area of the top of the tin? (Use π = 3.14)

70.84 cm²

Steps 2

Rachel is building a circular pond in her garden. The radius of the pond is 5 meters. Find the area of the pond.(Use π = 3.14)

78.5 m²

Steps 3

The circumference of a circular disc is 62.8 cm. Find its area.(Use π = 3.14)

314 cm²

Steps 4

The circumference of a circle is 44 cm. Find the area(approximately) of the circle if the radius is 7 cm.

154.14 cm²

Steps 5

A circular garden with a diameter of 24 centimeters is surrounded by a walkway of width 4 centimeters. Find the area of the walkway.

351.68 cm²