TCS
Company
Numerical Ability
Area and Volume
Two equilateral triangles of side 12cm are placed one on top of another, such that a 6 pointed star is formed .if the six verticals lie on a circle what is the area of the circle not enclosed by the star ?(Give the examples to the nearest sq cm)
Option
a. 68
b. 83
c. 57
d. 61
Read Solution (Total 3)
-
- area of star = √3/4 * (12)^2 + 3* √3/4 *(12/3)^2 = 48√3
if r be radius of circle then r=6/cos30 => r=12/√3 => r^2=48
area of circle = pi*48
area of the circle not enclosed by the star = 48*pi - 48√3 =48(3.14-1.732)= 68(approax)
a.68
- 10 years agoHelpfull: Yes(25) No(2)
- 68 is d answer
- 10 years agoHelpfull: Yes(4) No(4)
- 68
12 equilateral triangle
6root2+2root2=diameter of circle
area of circle=pie(4root2)^2=150.2
area of 12 triangles=12(root 3/4)*4*4=80.2
area not enclosed by stars=150.2-80.2=68 - 10 years agoHelpfull: Yes(2) No(0)
TCS Other Question
The cinema Multiplex MNOX has exactly three cinema screens:
cinema 1,
cinema2,
cinema3.
The multiplex prints three sets of tickets for September and three sets of tickets for October: One set for each of the cinemas for each of the two months. The company tickets’ are printed in a manner consistent with the following conditions:
-Each of the six sets of tickets is exactly one of the following colors. Green, blue red, white.
-For each cinema, the September tickets are a different color than the October tickets.
-For each month, tickets for different cinemas are in different colors.
-Exactly one set of September tickets is red .
-For cinema 3,either the September tickets or the October tickets , but not both are green
-The September tickets for cinema 2 are blue
-No October tickets are blue.
Option
a. The cinema 1 ticket for September are green
b. The cinema 1 ticket for September are White.
c. The cinema 3 tickets for October are green.
d. The cinema 1 tickets for October are red.
A bag contains 1100 tickets numbered 1,2,3,…..,1100,. If a ticket is drawn out of it at random , What is the probability that the ticket drawn at the digit 2 appearing on it?