IMO- Mathematics Olympiad Class 9: Questions 244 - 248 of 919

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Question number: 244

» Triangles and Circles

MCQ▾

Question

C1 is a circle of radius 4 cm, C2 is a circle of radius 12 cm. Jyoti wants the two circles to touch tangentially. She knows that there are two possibilities for the distance between their centers. What are these two distances?

Choices

Choice (4) Response

a.

8 cm and 10 cm

b.

8 cm and 16 cm

c.

10 cm and 16 cm

d.

13 cm and 4 cm

Question number: 245

» Lines, Angles and Quadrilaterals

MCQ▾

Question

In the figure, MN XZ and MO XN , then YNNZ=

Given the MN is parallel to XZ and MO is parallel to XN

Given the MN Is Parallel to XZ and MO Is Parallel to XN

Given the MN is parallel to XZ and MO is parallel to XN and find the ratio of YN: NZ equal value

Choices

Choice (4) Response

a.

YNOZ

b.

ONNZ

c.

YOON

d.

YONZ

Question number: 246

» Surface Area and Volumes

MCQ▾

Question

A rectangular field has its length and breadth in the ratio 5:3 . Its area is 3.75 hectares. The cost of fencing it at Rs. 5 per meter is ________

Choices

Choice (4) Response

a.

Rs. 1000

b.

Rs. 500

c.

Rs. 4000

d.

Rs. 400

Question number: 247

» Coordinate Geometry

MCQ▾

Question

On plotting the points A (3, 3), B (9, 3), C (12, 10), D (5, 10) and joining AB, BC, CD, DA Which of the following figure is obtained?

Choices

Choice (4) Response

a.

Hexagon

b.

Cross

c.

Triangle

d.

Parallelogram

Question number: 248

» Triangles and Circles

MCQ▾

Question

The PQR and QSR are right angles. If PS=16cm , SR=9cm and PQ=20cm , then the length of QR and QS respectively is ________

Given the PQR and QSR are right angles

Given the PQR and QSR Are Right Angles

Given the PQR and QSR are right angles, PS is 16 cm, SR is 9 cm and PQ is 20 cm, then Find the length of QR and QS respectively

Choices

Choice (4) Response

a.

15 cm, 12 cm

b.

16 cm, 15 cm

c.

25 cm, 12 cm

d.

15 cm, 16 cm

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