IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 308 - 313 of 929

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Question number: 308

» Surface Area and Volumes

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MCQ▾

Question

The area of a quadrilateral PQRS, in which , is an equilateral triangles of side 12 cm and is________.

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 309

» Triangles and Circles

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MCQ▾

Question

Triangle AXY is formed by three tangents to circle with center Z and , then angle XYZ equals ________

Image of triangle AXY is formed by three tangents to circle

Image of Triangle AXY is Formed by Three Tangents to Circle

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 310

» Triangles and Circles

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MCQ▾

Question

A running track is the ring formed by two concentric circles. It is 45 feet wide. The circumferences of the two circles differ by about ________

Choices

Choice (4)Response

a.

200 feet

b.

280 feet

c.

230 feet

d.

260 feet

Question number: 311

» Surface Area and Volumes

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MCQ▾

Question

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

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 312

» Triangles and Circles

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MCQ▾

Question

In the given figure, and QS, RS are the bisectors of and , then ________

Given the triangle PQR and 2 bisectors

Given the Triangle PQR and 2 Bisectors

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 313

» Surface Area and Volumes

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MCQ▾

Question

A bus stop is barricaded from the remaining part of the road, by using 75 hollow cones made of recycled cardboard. Each cone has a base diameter of 60 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs. 17 per m2, what will be the cost of painting all these cones? (Use and take )

Choices

Choice (4)Response

a.

Rs. 1645

b.

Rs. 1742

c.

Rs. 1586

d.

Rs. 1224

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