IMO- Mathematics Olympiad (SOF) Class 9: Questions 280 - 284 of 919

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Question number: 280

» Surface Area and Volumes

MCQ▾

Question

The ratio between the length and the breadth of a rectangular park is. If a man cycling along the boundary of the park at the speed of 15 km/hr completes one round in 12 minutes, then the area of the park is________

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 281

» Lines, Angles and Quadrilaterals

MCQ▾

Question

Two regular polygons are such that the ratio between their no. of sides is 1: 2 and the ratio of measures of their interior angles is 3: 4. Find the number of sides of each polygon.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 282

» Triangles and Circles

MCQ▾

Question

In the medians XC, YB and ZA pass through O. If , then YB is ________

Given the triangle XYZ the medians XC, YB and ZA pass through O

Given the Triangle XYZ the Medians XC, YB and ZA Pass through O

Given the triangle XYZ the medians XC, YB and ZA pass through O. if YO = 14, then find YB

Choices

Choice (4) Response

a.

19

b.

11

c.

26

d.

21

Question number: 283

» Triangles and Circles

MCQ▾

Question

In the figure , and . If the exterior angle XZK is, then the angle NMX is ________

Given XY=YZ, XM=XZ and MN is parallel to XY Exterior angle XZK

Given XY = YZ, XM = XZ and MN is Parallel to XY Exterior Angle XZK

Given XY = YZ, XM = XZ and MN is parallel to XY. If the exterior angle XZK is 144 find the angle NMX

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 284

» Surface Area and Volumes

MCQ▾

Question

The number of spherical balls each 4 cm in diameter be made out of a rectangular solid is ________

Choices

Choice (4) Response

a.

107

b.

109

c.

102

d.

105

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