Q1. The length of the common chord of two circles of radii 15cm and 20cm whose centers are 25 cm apart is
a. 24 b. 25 c. 15 d. 20 Q2. The diameter of a right conical is 6m. If a pole of length 2m can be fixed in the tent at half the distance of the radius from the centre of the base, then the area of the canvas required is (in m^2) Q3. A man has five sticks one each of length 1m, 2m, 3m, 4m and 5m. He chooses of them randomly and tries to make a triangle from them. What is the probability that he success? Q4. As shown in the diagram P is a point on AB such that AP: PB= 4 : 3 PQ is parallel to AC and QD is parallel to CP. Length of SQ is 6cm, What is ratio AP: PD? 2) 2: 1
3) 9:3
4) 8:3
Q5. if x, y and z are the sides of a triangle and x^2 + y^2 + z^2 = xy + yz + zx, then the triangle is : Q6. In a scalene triangle, sum of all the sides can be at most 13 units. How many triangles are possible? Q7. In a parallelogram PQRS the perpendicular from Q intersects side PS at H. If PQ = 2, PH = 1 and HS = 4, then the diagonal PR is equal to :
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Q3. A man has five sticks one each of length 1m, 2m, 3m, 4m and 5m. He chooses of them randomly and tries to make a triangle from them. What is the probability that he success?
a. 0.2
b. 0.7
c. 0.3
d. 0.1
here only 3 triangle r possible 234/245/345
and 5c3=10 so probability=0.3
n/a
Q6. In a scalene triangle, sum of all the sides can be at most 13 units. How many triangles are possible?
a. 3
b. 4
c. 5
d. 6
here 234/245/345/346/ triangle possible so ans is (b)4
n/a
Q1. The length of the common chord of two circles of radii 15cm and 20cm whose centers are 25 cm apart is
a. 24
b. 25
c. 15
d. 20
ans is 24
n/a
Q2. The diameter of a right conical is 6m. If a pole of length 2m can be fixed in the tent at half the distance of the radius from the centre of the base, then the area of the canvas required is (in m^2)
a. 10 pi
b. 12 pi
c. 15 pi
d. 16 pi
ans is 15 pt
n/a
I am getting the answer as √7
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