IMO Mathematics Olympiad (SOF) Class 9: Questions 344  348 of 919
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 919 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 450.00 or
Question number: 344
Question
A spherical ball of lead, 3 cm in diameter is melted and recast into three spherical balls. The diameter of two of these is 1.5 cm and 2 cm respectively. The radius of the third ball is________.
Choices
Choice (4)  Response  

a.  3 cm 

b.  2.5 cm 

c.  3.5 cm 

d.  2.66 cm 

Question number: 345
» Lines, Angles and Quadrilaterals
Question
The sum of the interior angles of a polygon is three times the sum of its exterior angles. Then number of sides in a polygon is ________.
Choices
Choice (4)  Response  

a.  8 

b.  9 

c.  5 

d.  7 

Question number: 346
Question
Write the coordinate of each the points J, K, L, M, N and O from the figure
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 347
» Lines, Angles and Quadrilaterals
Question
In parallelogram ABCD. . The altitudes corresponding to the sides CD and AD are respectively 9 cm and 11 cm. Find AD.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 348
Question
ABC is triangle in which BE, CF are medians. If , and , then the area of is________
Choices
Choice (4)  Response  

a.  240 

b.  120 

c.  102 

d.  360 
