3i-Infotech
Company
Numerical Ability
Geometry
There are two circles, one circle is inscribed and another circle is circumscribed over a square. What is the ratio of area of inner to outer circle?
Read Solution (Total 3)
-
- First see Q8 diagram in:
http://writer.zoho.com/public/suchandra/ques
For simplicity consider side of the square as 1. Now radius of inner circle =1/2. Formula for diagonal of the square = side*sqrt(2) = 1*sqrt(2). Half the diagonal = (1/2)*sqrt(2) = 1/sqrt(2). We got radiuses of both circles. So calculate areas and find ratio. Inner circle area= pi*(1/2)^2 and Outer circle = pi*(1/sqrt(2))^2. Divide both, you will get ratio as 1:2 - 13 years agoHelpfull: Yes(6) No(3)
- ratio = 1/2
- 13 years agoHelpfull: Yes(5) No(3)
- area of outer circle is Π((√2*a)/2)^2 . And inner circle is Π*a^2/4..Dividing both we are getting 1:2
- 9 years agoHelpfull: Yes(0) No(0)
3i-Infotech Other Question
Which of the following fractions is less than 1/3
(a) 22/62 (b) 15/46 (c) 2/3 (d) 1
Three types of tea the a,b,c costs Rs. 95/kg,100/kg and70/kg respectively.How many kgs of each should be blended to produce 100 kg of mixture worth Rs.90/kg, given that the quantities of band c are equal
a)70,15,15 b)50,25,25 c)60,20,20 d)40,30,30