Question

$\red{\boxed{\mathfrak\colorbox{grey}{Question}}}$
❑The Height of the cylinder is → $\sf\green{10 \: cm}$
and the Radius is → $\sf\green{3.5 \: cm}$
If the height of the cylinder is given and the Radius is Given then find the total surface of the article.​

Answer 1

Answer:

Given :-

• Height = 10 cm
• Radius = 3.5 cm

To Find :-

Total surface area

Solution :-

At first we know that the total surface area is denoted as TSA.

Now

TSA = 2πrh

TSA = 2 × 22/7 × 3.5/10 × 10

TSA = 44/7 × 35/10 × 10

TSA = 44 × 5/10 × 10

TSA = 44 × 5 × 1

TSA = 88 cm²

Answer 2

let the original height of cylinder = 10cm base radius of cylinder = 3.5cm so base radius of hemisphere = 3.5cm(same as that of cylinder)

The total surface area would be the sum of curved surface area of cylinder and the surface areas of 2 hemispheres.

surface area of cylinder = 2rh surface area of one hemisphere = 2r?

TSA = 2nrh + 2(2Tr2)

TSA = 2rrh + 47r2

TSA = 2rr(h + 2r)

* 3.5(10 + 2 * 3.5) = 22 * (1

TSA = 374 cm