IMO Mathematics Olympiad (SOF) Class 9: Questions 319  324 of 919
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Question number: 319
Question
The length of canvas 1.2 m wide required building a conical tent of height 14 m and also on the floor of floor area, breadth of canvas is ________
Choices
Choice (4)  Response  

a.  665 m 

b.  770 m 

c.  490 m 

d.  860 m 

Question number: 320
Question
If the altitude of an equilateral triangle is, its area is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 321
Question
A rectangle with perimeter 44cm is partitioned into 5 congruent rectangles, as indicated in the diagram. The perimeter of each of the congruent rectangle is ________.
Choices
Choice (4)  Response  

a.  20 cm 

b.  10 cm 

c.  24 cm 

d.  48 cm 

Question number: 322
Question
If in the following image angle PQR is 110˚ then what would be the angle PSR?
Choices
Choice (4)  Response  

a.  120˚ 

b.  170˚ 

c.  150˚ 

d.  140˚ 

Question number: 323
Question
If the purple angle is 40˚ and the yellow one is 30˚ what is the measure of aqua angle?
Choices
Choice (4)  Response  

a.  140˚ 

b.  110˚ 

c.  120˚ 

d.  130˚ 

Question number: 324
Question
What change in percent is made in the area of a rectangle by increasing its length byand breadth by?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

