Question

KARNATAKA RESIDENTIAL EDUCATIONAL INSTITUTIONS SOCIETY,

BENGALURU

SSLC COMMAN TEST-III

SUB: MATHEMATICS

Date: 04-05-2021 Time: 1h, 45min Max. Marks: 40

I. In the following questions four choices are given, for each question choose and write

the correct answer along with its alphabet 4X1=4M

1. If 13 Sinθ=12 then the value of Cosecθ is

A) 12/5 B) 13/5 C) 12/13 D) 13/12

2. If the area of the circular base of cylinder is 22cm2

and its height is 10cm then the

volume of the cylinder is

a) 2200cm2

b) 2200cm3

c) 220cm3

d) 220cm2

3. The formula used to find the curved surface area of the cone of radius(r), height (h) and

slant height(l) is `

A) CSA=πrl B) CSA=2π(r+l) C) CSA=2πr(r+h) D) CSA=







4. If Sin A= the magnitude of A is

A) 900

B) 600

C) 300 D) 450

II. Answer the following questions 3X1=3M

5. Find the value of Cos480

-Sin420

6. Find the mean of 7, 11, 2, 13 and 6

7. Write the formula to calculate the total surface area of Cylinder.

III. Answer the following questions 4X2=8M

8. If Sin A=3/4 calculate Cos A and tan A

9. If Sec 3A=Cosec(A-100

) where 3A is an acute angle find the value of A

Or

Evaluate -





10. A metallic sphere of radius 4.2 cm is melted and recast into shape of a Cylinder of radius

6cm find the height of the cylinder.

11. Find the median of the following

20, 29, 28, 33, 25, 43, 38, 42 ​

Answer 1

Step-by-step explanation:

1)sin theta =12/13

6) mean =7+11+2+13+6/5

MEAN= 39/5

so anewr = 7.5

Answer 2

Step-by-step explanation:

C) 12/13 because Cosecθ= hyp÷opp