Question

a closed circular cylinder has diameter 10 cm and height is 15cm. find the total surface area of cylinder use π =3.14​

Answer 1

Answer:

628cm^2

Step-by-step explanation:

Diameteof cylinder=10 cm

radius=10/2=5 cm

height=15 cm

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

=>2×3.14×5(15+5)

=>31.4×20

=>628 cm^2

Answer 2

Answer:

628.57cm²(approx)

Step-by-step explanation:

diameter=10cm

height=15cm

the total surface area of the cylinder=?radius=diameter/2

=10cm/2

=5cm/1

5cm

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

=2*22/7*5cm(5cm+15cm

2*22/7*5cm*20cm

2*22*5cm*20cm/7

4400cm²/7

628.57143cm²

628.57cm²(approx)

the total surface area of the cylinder is 628.57cm²(approx)