Question

if in thw class total children 100 if boys 40 and grils 60 draw pie chart and bar graph
and central angle​

Answer 1

if in thw class total children 100 if boys 40 and grils 60 draw pie chart and bar graph

and central angle​

central angle of boys =144 degrees

central angle of girls=216 degrees

Step-by-step explanation:

given there are total 100 children in a class

boys are 40

girls are 60

percentage of girls =(60/100)*100=60%

percentage of boys =(40/100)*100=40%

for central angle =(percentage%)*360

therefore,

central angle of girls=(60/100)*360=216 degrees

central angle of boys=(40/100)*360=144 degrees

To draw a pie chart

draw a circle of any radius using compass

draw a base line from center point of the circle to the any point of the circle

now mark the center point and with the help of the protractor draw a 144 degree line in the circle

hence the area from base line to the 144 degree line is the boys percentage in pie chart and the remaining is the 216 degrees is the girls percentage in pie chart

In a graph

take x axis as 2 points  boys and girls

take y axis as number of children(up to 100)

take the scale in y-axis (1 unit =5)

now draw the line of boys from x axis up to 40 number on the y axis

now draw the line of girls from x axis up to 60 number on the y  axis

hence the required pie chart and bar graph and central angles are done