Question

For school exhibition Ram made a model of rocket with diameter of the base 14 cm, height
10 cm, the conical portion is made of 3 cm height. Ram used yellow coloured sheet for
covering the curved surface of the cylindrical part, blue colour for conical part black
colour for the base and red colour for the fins of the model .Observe the given figures and
choose the answers
14
4​

Answer 1

Given :- For school exhibition Ram made a model of rocket with diameter of the base 14 cm, height 10 cm, the conical portion is made of 3 cm height. Ram used yellow coloured sheet for covering the curved surface of the cylindrical part, blue colour for conical part black

colour for the base and red colour for the fins of the model .

To Find :-

Area of the yellow colour paper required to cover the portion of the rocket.(use pie =22/7)

1. 408 cm^2

2. 308cm^2

3. 30.8cm^2

4. 3.08cm^2

Answer :-

from given data we have,

• Diameter of Base = 14 cm => Radius = diameter/2 = 7 cm .
• Height of rocket = 10 cm.
• Height of conical portion = 3 cm .
• Height of cylindrical portion = Height of rocket - Height of conical portion = 10 - 3 = 7 cm .
• Yellow color is used to cover the curved surface of the cylindrical part.

so,

→ CSA of cylindrical part = 2πrh = 2 * (22/7) * 7 * 7 = 2 * 22 * 7 = 22 * 14 = 308 cm² (2) (Ans.)

Learn more :-

! Read the Source/Text given below and answer four questions:

Veena planned to make a jewellery box to gift her friend ...

https://brainly.in/question/33406193

4. An architect is a skilled professional who plans and designs buildings and generally plays a key

role in their constr...

https://brainly.in/question/36748376

Answer 2

Step-by-step explanation:

This a question answer of a pre board exam And please mark as a brainlist