IMO- Mathematics Olympiad Class 9: Questions 249 - 254 of 919

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Question number: 249

» Surface Area and Volumes

MCQ▾

Question

If the altitude of an equilateral triangle is 23cm , its area is ________

Choices

Choice (4) Response
a.

43cm2

b.

63cm2

c.

2cm2

d.

83cm2

Question number: 250

» Coordinate Geometry

MCQ▾

Question

The Point identified in figure by the Coordinates (-6, 4) is ________

Point identified in figure by the Coordinates (-6, 4)

Point Identified in Figure by the Coordinates (-6, 4)

Different points in graph and find the coordinate related point

Choices

Choice (4) Response
a.

Y

b.

Z

c.

W

d.

X

Question number: 251

» Surface Area and Volumes

MCQ▾

Question

A triangle and a trapezoid are equal in area. They also have the same altitudes. If the base of the triangle is 18 inches, the mean of the parallel sides of the trapezoid is ________

Choices

Choice (4) Response
a.

36 inches

b.

Not obtained from this data

c.

18 inches

d.

9 inches

Question number: 252

» Surface Area and Volumes

MCQ▾

Question

The area of an isosceles triangle having base 32 cm and one side 20 cm is________

Choices

Choice (4) Response
a.

192cm2

b.

162cm2

c.

182cm2

d.

172cm2

Question number: 253

» Surface Area and Volumes

MCQ▾

Question

A circular park of 20 metre diameter has a circular path just inside the boundary of width 1 metre. The area of path is ________

Choices

Choice (4) Response
a.

21πm2

b.

19πm2

c.

15πm2

d.

17πm2

Question number: 254

» Triangles and Circles

MCQ▾

Question

What is the point of concurrency of the perpendicular bisectors in a triangle called ________.

Choices

Choice (4) Response
a.

Circumcentre

b.

Centroid

c.

Incentre

d.

Orthocentre

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