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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Geometry
4.28 Perimeter of the Triangle

Example:
The sides of the triangle ABC are 12 cm, 5 cm and 9 cm. Find its perimeter.

Example:
Perimeter of the triangle (P) = S1 + S2 + S3
Where P is the perimeter of the triangle, S1, S2 and S3 are the sides of the triangle.
Given that,
S1 = 12 cm, S2 = 5 cm and S3 = 9 cm.
Hence P = 12 + 5 + 9
i.e P = 26 cm.
Therefore, the perimeter of the given triangle is 26 cm.


Directions: Read the above example carefully and answer the following questions. Also draw 10 different triangles, measure their angles and find their perimeters.
Q 1: The sides of the triangle ABC are 7 cm, 8 cm and 10 cm. Find its perimeter.
30 cm
25 cm
20 cm
15 cm

Q 2: The sides of the triangle ABC are 12y cm, 18y cm and 14y cm. Find 'y' if its perimeter is given by 1408 cm.
38 cm
32 cm
30 cm
36 cm

Q 3: The sides of the triangle ABC are 8 cm, 82 cm and 83 cm. Find its perimeter.
526 cm
584 cm
528 cm
522 cm

Q 4: The sides of the triangle ABC are 119.23 cm, 129.32 cm and 110.56 cm. Find its perimeter.
338.12 cm
326.23 cm
348.56 cm
359.11 cm

Q 5: The sides of the triangle ABC are (x + 4) cm, (x + 8) cm and (x + 7) cm. Find 'x' if its perimeter is given by 70 cm.
18 cm
20 cm
19 cm
17 cm

Q 6: The sides of the triangle ABC are 142 cm, 182cm and 192 cm. Find its perimeter.
831 cm
881 cm
829 cm
844 cm

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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