Question

the circumference of a cylinder is 220cm and height is 63cm then find total surface area of cylinder​

Answer 1

circumference of cylinder: 2πr=220

r =220/2π =220x7/2x22=35cm

h:63cm

TSA = 2πr (r + h)

= 2x22/7 x35(35 +63)

2x22x5x98=21560cm2

Answer 2

The total surface area of cylinder​ is $21560cm^{2}.$

Step-by-step explanation:

Given,

The circumference of a cylinder = 220 cm and height = 63 cm

Let radius of a cylinder = r

To find, total surface area of cylinder​ = ?

We know that,

The circumference of a cylinder = $2\pi r$

⇒$2\times \dfrac{22}{7} \times r=220$

⇒$r=\dfrac{220\times 7}{44} =5\times 7=35cm$

∴ The circumference of a cylinder = 35 cm

Total surface area of cylinder​ $=2\pi r(r+h)$

$=2\times \dfrac{22}{7} \times 35(35+63)cm^{2}$

$=2\times 22 \times 5 \times 98 cm^{2}$

$=220 \times 98 cm^{2}$

$=21560cm^{2}$

Hence, the total surface area of cylinder​ is $21560cm^{2}.$