IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 294 - 299 of 929
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Question number: 294
Question
Centroid of a triangle is the point of concurrency of its ________
Choices
| Choice (4) | Response | |
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| a. | Triangle |
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| b. | Perpendicular bisectors |
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| c. | Medians |
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| d. | Angle |
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Question number: 295
Question
216 plastic balls each of radius r are melted together to from one big sphere of radius R. then the ratio of surface area of the big sphere to that of a ball is ________
Choices
| Choice (4) | Response | |
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| a. | 9 |
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| b. | 36 |
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Question number: 296
Question
The base and height of the triangle are in the ratio. The area of the triangle is , then height of triangle = ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 18 cm |
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| b. | 19 cm |
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| c. | 20 cm |
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| d. | 22 cm |
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Question number: 297
Question
The area of a square and a rectangle are equal. The side of square is 12 cm and the length of rectangle is 16 cm. the perimeter of the rectangle is ________
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 75 cm |
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| b. | 144 cm |
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| c. | 25 cm |
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| d. | 50 cm |
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Question number: 298
Question
In triangle XYZ, the altitude from X to YZ meets YZ at K, and the altitude from Y to XZ meets XK at M. if , and , if then the length of MK is ________
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Question number: 299
Question
In the given figure, PQRS is a square of side 2a with centers P, Q, R and S, four circles are drawn such that each circle touch externally two of the remaining three circles. Then the area of the shaded region is ________
Given the PQRS is a Square of Side 2a and 4 Circles Are Drawn
Given the PQRS is a square of side 2a. With centres P, Q, R and S, four circles are drawn such that each circle touch externally two of the remaining three circles find the area of shaded region
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