Question

Questions no. 5 and 6 full explain​

Answer 1

Answer:

5):

(a)

we know,

pie chart is totally 360°

55°+5x°+81°+2x°=360°

or,5x+2x=360-55-81

or,7x=224

or,x= 224/7=32

so, x= 32 [proved]

(b)

science = 81°

turn it to percentage,

81°/360°×100

=22.50%

(c)

if,

5x°=5×32=160°

160° stands for = 48 students

1° " " = 48/160 "

360° " " =360×48/160

=108 students

there are total 108 students.

6):

(a)

there are total 800 students In the institute.

& this pie chart is total 360°

360° stands for = 800 students

1° " " = 800/360 "

54° " " = 54×800/360

= 270 students

270 students come by public bus

(b)

those students, who are

come by foot =360°- (216°+54°+18) =72°

so, those students , who

are not use institute bus =(54°+18°+72°)=144°

360° stands for = 800 students

1° " " = 800/360 "

144° " " =144×800/360

= 320 students

320 students do not use institute bus

(c)

those students, who

are come by foot =360°- (216°+54°+18) =72°

360° stands for = 800 students

1° " " = 800/360 "

72° " " =72×800/360

= 160 students

160 students come by foot.