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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Geometry
4.18 Area of a Circle - I

Example:
The radius of a circle is 4.9 cm. Find its area.

Solution:
Given that,
The radius of circle (r) = 4.9 cm.
The area of a circle = p r2.
= 22/7 * (4.9)2
= 22/7 * 4.9 * 4.9
75.46 sq cm.


Directions: Read the above example carefully and answer the following questions.

Draw 10 different circles on sheet of paper and represent each with different color. Find the area of each of them.

Q 1: Find the radius of a circle whose area is given by 1.2474 sq cm.
1.35 cm
0.23 cm
0.63 cm
1.26 cm

Q 2: Find the raduis of a circle whose area is given by 154 sq cm.
5 cm
6 cm
10 cm
7 cm

Q 3: The radius of a circle is 1.4 cm. Find its area.
616 sq cm
6.16 sq cm
0.616 sq cm
61.6 sq cm

Q 4: Find the diameter of a circle if its area is given by 86.625 sq cm.
6 cm
10.5 cm
12 cm
5.25 cm

Q 5: The radius of a circle is 13.5 cm. Find its area.
5.725 sq cm
572.56 sq cm
385.23 sq cm
385.54 sq cm

Q 6: Find the diameter of a circle whose area is given by 9.625 sq cm.
1.75 cm
3.5 cm
4.5 cm
1.86 cm

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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