IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 471 - 476 of 1042

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Question 471

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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 O is given

A Circle with Center O is Given

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Choices

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

Question 472

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Question

MCQ▾

A quadrilateral whose one diagonal is 4 cm. If the length of altitudes from opposite vertices on the diagonal is 2.5 cm and 1.5 cm, then the area of quadrilateral is ________.

Choices

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

Question 473

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Question

MCQ▾

The number of surfaces in right circular cylinder is________.

Choices

Choice (4)Response
a.1
b.2
c.3
d.4

Question 474

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Question

MCQ▾

If the area of a cylinder with radius r = 1 and height h = 2 is equal to area of a cone with radius r = 1 and height h, the height of the cone is________.

Choices

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

Question 475

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Question

MCQ▾

A quadrilateral whose one diagonal is 5.5 cm. If the length of altitudes from opposite vertices on the diagonal is 2.5 cm and 3.5 cm, then the area of quadrilateral is ________.

Choices

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

Question 476

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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 = 30 cm and AC = 50 cm, then BH = ________.

Right-angled triangle ABC with AB = 30 cm, AC = 50 cm

Right-Angled Triangle ABC with AB = 30 Cm, AC = 50 Cm

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Choices

Choice (4)Response
a.50
b.40
c.42
d.25