Surface Area and Volumes (IMO- Mathematics Olympiad Class 9): Questions 42 - 47 of 104

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 919 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 42

» Surface Area and Volumes

MCQ▾

Question

A circular park of 80 metre diameter has a circular path just inside the boundary of width 8 metre. The area of path is ________

Choices

Choice (4) Response

a.

676πm2

b.

476πm2

c.

376πm2

d.

576πm2

Question number: 43

» Surface Area and Volumes

MCQ▾

Question

If the volumes of two cones are in the ratio 2: 3 and their diameters are in the ratio 3: 7, and then the ratio of their heights is ________

Choices

Choice (4) Response

a.

12:51

b.

54:24

c.

65:24

d.

98:27

Question number: 44

» Surface Area and Volumes

MCQ▾

Question

The length of canvas 1.2 m wide required building a conical tent of height 14 m and also on the floor of floor area 346.5m2 , breadth of canvas is ________

Choices

Choice (4) Response

a.

665 m

b.

770 m

c.

490 m

d.

860 m

Question number: 45

» Surface Area and Volumes

MCQ▾

Question

If the altitude of an equilateral triangle is 6cm , its area is ________

Choices

Choice (4) Response

a.

62cm2

b.

23cm2

c.

33cm2

d.

22cm2

Question number: 46

» Surface Area and Volumes

MCQ▾

Question

What change in percent is made in the area of a rectangle by increasing its length by 6% and breadth by 4% ?

Choices

Choice (4) Response

a.

1.024%increase

b.

10.24%increase

c.

10.24%decrease

d.

1.024%decrease

Question number: 47

» Surface Area and Volumes

MCQ▾

Question

The base of a prism is a right angle triangle and the two sides containing the right angle are 8 cm and 15 cm. if its height is 20 cm, then the volume of the prism is ________

Choices

Choice (4) Response

a.

600 c. cm.

b.

1200 c. cm.

c.

300 c. cm.

d.

160 c. cm.

Sign In