Question

1.Area, A, of circle, radius r. A = rr2
2.Circumference, C, of circle, radius r. C = 2rr
3.Lateral surface area, A, of cylinder of radius r, height h. A = 2rrh
4.Surface area, A, of sphere of radius r. A = 4rr2
5.Volume, V, of prism, cross-sectional area A, length l. V = Al
6.Volume, V, of cylinder of radius r, height h. V = rr2h
7.Volume, V, of sphere of radius r. V = 34rr3

Answer 1

Answer:

Radius of cylinder (r)=7cm

Height of cylinder (h)=15cm

Curved Surface Area =2πrh

=2×(22/7)×7×15

=660cm

2

Total Surface Area =2πr(h+r)

=2×(22/7)×7(15+7)

=2×22×22

=968cm

2