A solid cylinder of radius 7cm is 10cm long. find it's total surface area

a. 70πcm3

b. 210πcm3

c. 238πcm3

d. 189πcm3

c. 238πcm3

Step-by-step explanation:

Total surface area =

2pirh + 2pir^2

Given radius r = 7cm and

Height h = 10cm

Total surface area = 2 x pi x 7 x 10 + 2 x pi x (7) ^2

140pi + 2 x pi x 49

140pi + 98pi

238pi cm^3

C. 238π cm^3.

Step-by-step explanation:

Surface area = 2 * area of the circular ends + area of the curved length

= 2π r^2 + 2π r * l

= 2 π 7^2 + 2π 7 * 10

= 98π + 140π

= 238π cm^3.