IMO- Mathematics Olympiad Class 8: Questions 448 - 453 of 1029

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1029 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: 448

» Mensuration

MCQ▾

Question

What is the ratio of the perimeter of the shaded region to the circumference of the circle?

A circle with center A is given

A Circle With Center a Is Given

Find out the ratio of the perimeter of the shaded region to the circumference of the circle

Choices

Choice (4) Response
a.

4+π4π

b.

4π4π

c.

4+ππ

d.

2+π4π

Question number: 449

» Mensuration

MCQ▾

Question

The radius of the cylinder whose lateral surface area is 610 cm2 and height 6 cm, is________.

Choices

Choice (4) Response
a.

11 cm

b.

12 cm

c.

14 cm

d.

10 cm

Question number: 450

» Mensuration

MCQ▾

Question

The perimeter of a trapezoid is 60 cm and its non-parallel sides are each equal to 13 cm and its altitude is 12 cm. Its area is________.

Choices

Choice (4) Response
a.

204m2

b.

201m2

c.

104m2

d.

223m2

Question number: 451

» Mensuration

MCQ▾

Question

The ratio of radii of two cylinders is 1: 3 and heights are in the ratio 3: 5. The ratio of their volume is________.

Choices

Choice (4) Response
a.

1: 15

b.

12: 3

c.

1: 12

d.

1: 14

Question number: 452

» Mensuration

MCQ▾

Question

A metal sheet 49 cm long, 7 cm broad and 1 cm thick is melted into a cube. The difference between surface areas of two solids is________.

Choices

Choice (4) Response
a.

504cm2

b.

512cm2

c.

512cm2

d.

420cm2

Question number: 453

» Mensuration

MCQ▾

Question

A rectangle field has its length and breadth in the ratio 5: 3. Its area is 4.50 hectares. The cost of fencing it at Rs. 5 per meter is________.

Choices

Choice (4) Response
a.

Rs 4000

b.

Rs 4600

c.

Rs 4400

d.

Rs 4100

Sign In