Question

Find the surface area (in cm. sq.) of a container with radius 4 cm and height 10 cm, assuming it
has an open top. The bottom is closed.

Answer 1

Answer:

Step-by-step explanation:

Given :

Radius of cylinder = 4cm

Height = 10cm

To find : Surface area of the cylinder with open top and closed bottom

We know that,

Curved surface area = 2πrh

[Curved surface area refers to the area of the figure excluding the top and bottom]

Hence Surface area of a cylinder with open top and closed bottom will be :

Curved surface area + Area of base

Curved surface area:

Area of base :

In a cylinder the base is made of a circle.

Therefore area of base = πr²

Adding both the areas,

Hence final answer =≥ 301.6 cm² (approx)