IMO- Mathematics Olympiad Class 9: Questions 294 - 299 of 919

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Question number: 294

» Surface Area and Volumes

MCQ▾

Question

The area of rhombus is Equation and one of its diagonals is 8 cm. Its perimeter is ________

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 295

» Triangles and Circles

MCQ▾

Question

Centroid of a triangle is the point of concurrency of its ________

Choices

Choice (4) Response

a.

Angle

b.

Perpendicular bisectors

c.

Medians

d.

Triangle

Question number: 296

» Surface Area and Volumes

MCQ▾

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

a.

36

b.

Equation

c.

9

d.

Equation

Question number: 297

» Surface Area and Volumes

MCQ▾

Question

The base and height of the triangle are in the ratioEquation . The area of the triangle is Equation , then height of triangle = ________

Choices

Choice (4) Response

a.

20 cm

b.

22 cm

c.

18 cm

d.

19 cm

Question number: 298

» Surface Area and Volumes

MCQ▾

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.

25 cm

b.

50 cm

c.

75 cm

d.

144 cm

Question number: 299

» Triangles and Circles

MCQ▾

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 Equation , Equation and Equation , if Equation then the length of MK is ________

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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