IMO Mathematics Olympiad Class 9: Questions 386  389 of 919
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Question number: 386
Question
The base of a prism is a triangle whose sides arc of lengths 13 cm, 20 cm and 21 cm. if the height of the prism be 9 cm. find the area of total lateral surface, volume of the prism
Choices
Choice (4)  Response  

a.  1543 c. cm. 

b.  1134 c. cm. 

c.  1754 c. cm. 

d.  1865 c. cm. 

Question number: 387
Question
A rectangle is divided into five smaller rectangles, as shown in the figure. Four of them have areas, , and as indicated. Then the area of the shaded rectangle is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 388
» Lines, Angles and Quadrilaterals
Question
A triangle and a trapezoid are equal in area. They also have the same altitude. If the base of the triangle is 18 inches, the median of the trapezoid is ________
Choices
Choice (4)  Response  

a.  18 inches 

b.  9 inches 

c.  Not obtainable from these data 

d.  36 inches 

Question number: 389
Question
Two cubes each of volume are joining end to end. Find the surface area of the resulting cuboid.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

