Can you me with questions 1 and 2? i need to find the area of the shaded region. and show me how to do it.

 1.find the difference between the areas of the bigger shape and the shape within.
The bigger shape is a square and shape within circle so equation is
l²-(1/4πd²) where l is length of one side of the square,π is 22/7 and d is diameter of the circle
(8ft*8ft)-(1/4*22/7*8ft*8ft) 
64ft²-352/7ft²
13.71 ft² is the area of the shaded area
2.(1/2bh)-(lw) where l is the length of the rectangle, w is the width of the rectangle,b is the base of the triangle, h is the height of the triangle.
(1/2*6m*7m)-(4m*2m)
21m²-8m²
13m² is the area of shaded area.

The correct option is A.

Step-by-step explanation:

Total number of students at the school is 2,500.

In the given pi chart Pink, Yellow and Sky Blue color represent the percentage of students that under reported, accurately reported, and over reported their heights respectively.

From the graph we can conclude that the yellow portion is approximately one fifth of whole circle. It means the number of students that accurately reported their height is one fifth of total number of students.

Therefore the number of students that accurately reported their height is 500. Option A is correct.