Question

Find:
(i) the lateral surface,
(ii) the whole surface, and
(iii) the volume of a right circular cylinder whose height is 13.5 cm and radius of the base 7cm

Answer 1

Answer:

LSA = 594 cm^2

TSA = 902 cm^2

VOL = 2079 cm^2

Step-by-step explanation:

given

height of the right circular cylinder = 13.5 CM

& radius of base = 7 CM

as we know that

• lateral surface area of a right circular cylinder = 2πrh

=> LSA = 2 × 22/7 × 7 × 13.5

=> LSA = 2 × 22 × 13.5

=> LSA = 594 cm^2

=> or LSA = 594/100 = 5.94 m^2

• total surface area of a right circular cylinder = 2πr(h+r)

=> TSA = 2 × 22/7 × 7 ( 13.5 + 7)

=> TSA = 2 × 22 × 20.5

=> TSA = 902 cm^2

=> or TSA = 902/100 = 9.02 m^2

• volume of right circular cylinder = π{(r)^2}h

=> VOL = 22/7 × (7)^2 × 13.5

=> VOL = 22/7 × 49 × 13.5

=> VOL = 22 × 7 × 13.5

=> VOL = 2079 cm^2

or VOL = 2079/100 = 20.79 m^2