Question

3). A company packages its milk powder in cylindrical containers whose base has a diameter

of 16.8cm and height 20.5 cm .Company places a label around the curved Surface of the

container by leaving 1.5cm from the top and the bottom.

A) Which formula should be used to find the surface area of the label?

B) What is the base radius of the container?

C) What is the height of the Label?

D) Find the surface area of the Label.​

Answer 1

Step-by-step explanation:

Here, r = 142 = 7 cm

Height of the cylindrical label = 20 – (2 + 2) = 16 cm

Surface area of the cylindrical shaped label = 2πrh

= 2 × 227 × 7 × 16

= 704 cm2

Hence, the required area of label = 704 cm2.

Answer 2

Answer:

Givenn:

d=14cm and h=20cm

⇒Height of the label =20−2−2=16 cm

⇒Radius =2d=214=7 cm

⇒Area of the label =2πrh=2×722×7×16=704 sq cm