IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 446 - 451 of 1042

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Question 446

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Question

MCQ▾

A rectangle field has its length and breadth in the ratio 2: 3. Its area is 3.82 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 447

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Question

MCQ▾

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

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Choices

Choice (4)Response
a.40
b.Impossible to determine
c.30
d.50

Question 448

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Question

MCQ▾

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

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Choices

Choice (4)Response
a.
b.
c.
d.

Question 449

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Question

MCQ▾

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

Choices

Choice (4)Response
a.16 cm
b.11 cm
c.10 cm
d.12 cm

Question 450

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Question

MCQ▾

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.
b.
c.
d.

Question 451

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Question

MCQ▾

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: 14
b.12: 3
c.1: 12
d.1: 15