IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 311 - 315 of 929

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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

Given the triangle PQR and QS, RS are the bisectors of Q and R

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

Question number: 314

» Surface Area and Volumes

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MCQ▾

Question

The volume of the largest circular cone that can be cut of a cube whose edge is 8 cm is ________

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 315

» Surface Area and Volumes

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MCQ▾

Question

A circular park of 80 metre diameter has a circular path just inside the boundary of width 8 metre. The area of path is ________

Choices

Choice (4) Response

a.

b.

c.

d.