Question

In a tree plantation programme, the number of trees planted by students of different classes is given in the following table. Draw a pie diagram showing the information.

Standard	5 th	6th	7 th	8 th	9 th	10 th
No. of trees	40	50	75	50	70	75

Answer 1

The measures of central angles are given in the table.

Age group(Yrs)	No. of persons	Central Angle
5th	40	$\frac{40}{360}\times 360=40°$
6th	50	$\frac{50}{360}\times 360=50°$
7th	75	$\frac{75}{360}\times 360=75°$
8th	50	$\frac{50}{360}\times 360=50°$
9th	70	$\frac{70}{360}\times 360=70°$
10th	75	$\frac{75}{360}\times 360=75°$
Total	360

The pie digram showing the above data is given below:
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