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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 8 - Mathematics
Area of a Circle - 2

Example:
The circumference of a circle is 56.6 cm. Find its area.

Solution:
If r is the radius of a circle, we have
Circumference (C) = 2pr
Therefore, the area of the circle = p r2
A = p(C/2p)2
A = C2 / 4p
Given that,
C = 56.5cm.
A = (56.5)2/4 * 7/22
A = 22345.75/ 88
A = 253.93 Sq. cm.
Therefore, the area of he circle (A) = 253.93 Sq. cm. (Answer is corrected by two decimal place)


Directions: Solve the following problems and correct the answer two decimal places. Also write at least ten examples of your own.

Have your essay responses graded by your teacher and enter your score here!

Your score for this chapter (0-100%) =


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