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The radius of the semicircle is equal to the half the side of the square. The area of the square is 1024 Sq. Cm. Find the perimeter of the semicircle.
Correct
Answer c
Area of square = a^{2} = 1024
Side (a) = 32 cm
Radius of the semicircle = (1/2) * 32 = 16 cm
Perimeter of semicircle = πr+d
= > 16π +32cm
Incorrect
Answer c
Area of square = a^{2} = 1024
Side (a) = 32 cm
Radius of the semicircle = (1/2) * 32 = 16 cm
Perimeter of semicircle = πr+d
= > 16π +32cm
Question 12 of 20
12. Question
250 m long train crosses opposite to another 360 m long train in 18 sec. If the speed of first train is 75 km/hr, then find the speed of the second train (in km/hr)?
Three friends A, B and C started a business by investing an amount of Rs. 12500, Rs. 13000 and Rs. 10500. If A’s share is Rs. 4500, then B’s share will be?
Correct
Answer d
The ratio of profit = 12500: 13000: 10500
= > 25: 26: 21
A’s share = Rs. 4500
25’s = 4500
1’s = 180
B’s share =180*26 = Rs. 4680
Incorrect
Answer d
The ratio of profit = 12500: 13000: 10500
= > 25: 26: 21
A’s share = Rs. 4500
25’s = 4500
1’s = 180
B’s share =180*26 = Rs. 4680
Question 14 of 20
14. Question
Pipe P and Q fill a tank in 10 min and 20 min respectively. If both the pipes are opened, after how much time Q should be closed so as to fill the tank in 8 min?
Correct
Answer a
The capacity of the tank = LCM of 10 and 20 = 20
Pipe P fills = 2 litre/min
Pipe Q fills = 1 litre/min
Pipe P fills in 8 mins = (8*2) = 16 litres
Remaining = 20-16 = 4 litres
4 litres will be filled by Pipe Q in = (4/1) = 4 mins
So, Pipe Q should be closed after 4 mins.
Incorrect
Answer a
The capacity of the tank = LCM of 10 and 20 = 20
Pipe P fills = 2 litre/min
Pipe Q fills = 1 litre/min
Pipe P fills in 8 mins = (8*2) = 16 litres
Remaining = 20-16 = 4 litres
4 litres will be filled by Pipe Q in = (4/1) = 4 mins
So, Pipe Q should be closed after 4 mins.
Question 15 of 20
15. Question
What is the difference between the compound interest on Rs. 25000 for 2 years at 4 % per annum compounded yearly and half yearly?
The radius of the semicircle is equal to the half the side of the square. The area of the square is 1024 Sq. Cm. Find the perimeter of the semicircle.
32π +16 cm
24π +16 cm
16π +32 cm
28π +16 cm
None of these
250 m long train crosses opposite to another 360 m long train in 18 sec. If the speed of first train is 75 km/hr, then find the speed of the second train (in km/hr)?
56 km/hr
47 km/hr
51 km/hr
63 km/hr
None of these
Three friends A, B and C started a business by investing an amount of Rs. 12500, Rs. 13000 and Rs. 10500. If A’s share is Rs. 4500, then B’s share will be?
4450
4160
4890
4680
None of these
Pipe P and Q fill a tank in 10 min and 20 min respectively. If both the pipes are opened, after how much time Q should be closed so as to fill the tank in 8 min?
4 min
6 min
8 min
7 min
None of these
What is the difference between the compound interest on Rs. 25000 for 2 years at 4 % per annum compounded yearly and half yearly?
15.254
20.804
25.804
18.254
None of these
Directions (Q. 16 – 20): Read the following pie-chart and table carefully and answer the questions given below.
Percentage distribution of total mobile phone connection users
Total users = 14 crore
Ratio of male to female among these connections
Company
Male : Female
Reliance
5 : 3
Vodafone
9 : 5
Airtel
2 : 1
BSNL
2 : 5
Idea
5 : 7
Aircel
3 : 4
Tata Indicom
5 : 9
The number of female users of Airtel is approximately what percent of total number of users of Airtel?
24
33
29
21
36
What is the respective ratio between the number of male users of Reliance and female users of Aircel?
35:4
12:1
19:5
17:8
None of these
What is the difference between female users of Vodafone and male users of Airtel?
66 lakhs
6.6 lakhs
66 thousands
6 lakhs
None of these
What is the total number of female users?
7.21 crore
6.52 crore
7.36 crore
7.45 crore
None of these
The number of female users of Reliance is what percent less than the female users of B.S.N.L.?
40
50
56
60
None of these
Answers:
Directions (Q. 1 – 5):
Answer c
The pattern is, *2 – 1, *4 – 3, *6 – 5, *8 – 7, *10 – 9,..