Question

Find the total surface area of the cylinder with diameter 20 cm and height 25 cm​

Answer 1

Answer

The total surface area of cylinder is 2200cm².

Step-by-step explanation:

To Find :-

• The total surface area of cylinder with diameter 20cm and height 25cm.

★ Solution

Given that,

• Diameter of cylinder = 20cm
• Height of cylinder = 25cm

Firstly, Finding the radius of cylinder :-

We know,

• Radius = Diameter/2

⇒ Diameter/2

⇒ 20/2

⇒ radius = 10cm

Now, A . T . Q,

• The total surface area of the cylinder.

We know,

Total surface area of cylinder = 2πr(h + r) sq. units,

Where,

• r = Radius
• h = Height

Therefore,

⇒ 2πr(h + r)

⇒ 2 × 22/7 × 10 (25 + 10)

⇒ 2 × 22/7 × 10 × 35

⇒ 44/7 × 10 × 35

⇒ 44/7 × 350

⇒ 44 × 50

⇒ 2200

Hence,

The total surface area of cylinder is 2200cm².

Formula used :-

• Total surface area of cylinder = 2πr(h + r) sq. units.