Question

3

Case study based questions are compulsory . Attempt any four sub

parts of each question . Each subpart carries 1 mark.

17 Case Study based-1

In the summer vacation Lal and his friends made a toy tent with

colour paper . It is in the shape of a cylinder surmounted by a

conical top.

a Area of colour paper required to cover cylindrical part .

(i) 44 cm

2

(ii) 88 cm

2

(iii) 22 cm

2

(iv) 88 c m

2

1

b What is the area of the base ?

(i)





m

2

(ii)





cm

2

(iii)





cm

2

(v) 88 cm

2

1

c What is the ratio between volume of conical part and cylindrical part.

(i)1:3

(ii)3:1

(iii)1:7

(iv)7:1

1

d Find the height of the cylindrical part.

(i)3cm

(ii) √ cm

(iii)√ cm

(iv)7cm

1

e Cost of the canvas required to cover cylindrical part , if cost of 1cm

2

is

Rs 6(avoid base)

(i)Rs.520

(ii)Rs. 528

(iii)Rs.518

(iv)Rs.50​

Answer 1

Answer:

What is the area of the base