Question

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
Choose the correct option.
Please answer this with steps​

Answer 1

Given:

As given in the figure

To find:

The area of the yellow colour paper required to cover the portion of the rocket.

Solution:

The height of the rocket model = 10 cm

The height of the conical part of the model = 3 cm

∴ The height of the cylindrical part of the model = 10 - 3 = 7 cm

The diameter of the base = 14 cm

∴ The radius of the base = $\frac{diameter }{2} = \frac{14}{2} = 7\: cm$

Ram uses yellow colour paper to cover the cylindrical surface of the rocket model, so we have to find the surface area of the cylindrical part to get the area of the yellow paper used.

Now,

The required area of the yellow paper used to cover the cylindrical portion of the rocket is,

= Curved surface area of the cylinder

= $2 \pi r h$

= $2 \times \frac{22}{7} \times 7 \times 7$

= $2 \times 22 \times 7$

= $\bold{308 \:cm^2}$ ← option (2)

Thus, the area of the yellow colour paper required to cover the portion of the rocket is → 308 cm².

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Also View:

A wooden toy rocket is in the shape of a cone mounted on a cylinder as shown in the adjacent figure. The height of the entire rocked is 26 cm, while the height of the conical part is 6cm. The base of the conical position has a diameter of 5cm, while the base diameter of the cylindrical portion is 3cm. If the conical portion is to be painted orange and the cylindrical portion is to be painted yellow, find the area of the rocket painted with each of these colours?

brainly.in/question/5484414

A kite in the shape of a square with a diagonal 32 cm and an isosceles triangle of base 8 cm and sides 6 cm each is to be made of three different shades as shown in the given figure. How much paper of each shade has been used in it?

brainly.in/question/1425904

a wooden toy rocket is in the shape of a cone mounted on a cylinder. The height of the entire rocket is 26 cm, while the height of the conical is 6 CM, the base of the conical portion has a diameter of 5 cm, while the base diameter of the cylinder portion is 3 cm conical portion is to be painted orange and cylindrical pots and yellow, find the area of the rocket painted with each of this colours (use pie 3.14 )​

brainly.in/question/14022509

Answer 2

Answer:

are area of yellow colour paper required to cover the portion of the crop get by using pi 22 by 7 the option (c) 308cm^2