IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 445 - 449 of 1040

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Question number: 445

» Mensuration

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MCQ▾

Question

The radii of the bases of two cylinders are in the ratio of 3: 4 respectively and their heights are in the ratio 4: 5 respectively, find the ratio of their volumes.

Choices

Choice (4) Response

a.

3: 20

b.

20: 3

c.

20: 9

d.

9: 20

Question number: 446

» Mensuration

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MCQ▾

Question

A rectangle field has its length and breadth in the ratio 2: 3. Its area is 3.80 hectares. The cost of fencing it at Rs. 2 per meter is________.

Choices

Choice (4) Response

a.

Rs 1500

b.

Rs 1100

c.

Rs 1600

d.

Rs 1000

Question number: 447

» Mensuration

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MCQ▾

Question

ABC is a right angled triangle with . AH is drawn perpendicular to BC where H lies on BC. If AB = 40 cm and AC = 60 cm, then BH = ________.

Right-angled triangle ABC with AB = 40 cm, AC = 60 cm

Right-Angled Triangle ABC with AB = 40 Cm, AC = 60 Cm

Find out BH of a right-angled triangle ABC using given measure when AH is perpendicular to BC

Choices

Choice (4) Response

a.

40

b.

25

c.

30

d.

50

Question number: 448

» Mensuration

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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.

b.

c.

d.

Question number: 449

» Mensuration

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

14 cm

b.

11 cm

c.

10 cm

d.

12 cm