Q.13. Each side of a regular polygon is 4.2 cm in length. The perimeter of the polygon is 37.8 cm. How many sides does the polygon have?
2 points
5
7
8
9
Q.14. The heights of 10 girls were measured in cm and the results are as follows: 135, 150, 139, 128, 151, 132, 146, 149, 143, 141. What is the mean height of the girls?
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Answer:
polygon sides= perimeter/side length
=37.8/4.2
=9
Answered by
0
Answer:
Q.13 Each side of a regular polygon - 4.2 cm
perimeter- 37.8
To find the number of sides will 37.8/4.2
Answer=9
if the side is in decimal, the answer will be = no such polygon can be made with these measurements
Q.14 Number of girls - 10
Heights - 135, 150, 139, 128, 151, 132, 146, 149, 143, 141
The formula for mean is sum of all items/total number of items
sum of heights- 1414
sum of all items/total number of items
= 1414/10
= 141.4
Hence 141.4 is our mean
HOPE IT HELPS
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