Question

Total surface area of a cylinder whose diameter is 14 cm and height 7 cm ___ sq. cm​

Answer 1

Answer:

616 cm^2

Step-by-step explanation:

Height = 7cm

Diameter = 14 cm

=Radius = 14/2 = 7 cm

Total surface area of cylinder = 2πr(r+h)

=> 2*22/7*7*(7+7)

=> 44*(14)

=> 616 cm^2

:- TSA OF CYLINDER = 616 CM^2

Answer 2

Answer- The above question is from the chapter 'Surface Areas and Volumes'.

Concept used: Total surface area of cylinder = Area of 2 bases + Curved Surface Area

T.S.A. of cylinder = 2πrh + 2(πr²)

T.S.A of cylinder = 2πr(r + h)

Given question: Total surface area of a cylinder whose diameter is 14 cm and height 7 cm is ______ cm².

Solution: For a cylinder,

Diameter (d) = 14 cm

Radius (r) = $\frac{d}{2}$ = $\frac{14}{2}$ = 7 cm

Height (h) = 7 cm

Total surface area = 2πr(r + h)

                              = 2 × $\dfrac{22}{7}$ × 7 (7 + 7)

                               = 44 × 14

                               = 616 cm²

∴ Total surface area of a cylinder whose diameter is 14 cm and height 7 cm is 616 cm².