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##### objective Ques (100 results)
11)

The area of the four walls of a room having length 6 m, breadth 4 m and height 4 m, is:

SSC CGL 2020
A)

50 sq. metre

B)

60 sq. metre

C)

40 sq. metre

D)

80 sq. metre

12)

Two circles of radii 8 cm and 6 cm touch each other externally. The length of the direct common tangent is:

SSC CGL 2020
A)

20 cm

B)

13.86 cm

C)

24 cm

D)

10.12 cm

13)

The inner and outer radius of a circular track are 29 m and 23 m respectively. The cost of leveling the track at Rs. 7 per sq. metre is :

SSC CGL 2020
A)

Rs. 3,284

B)

Rs. 5,300

C)

Rs. 7,215

D)

Rs. 6,864

14)

A circular disc of area $$0.64\pi\space m^2$$ rolls down a length of 1.408 km. The number of revolutions it makes is:  (Take $$\pi ={22\over7}$$)

SSC CGL 2020
A)

280

B)

360

C)

140

D)

180

15)

A metallic sphere of diameter 40 cm is melted into smaller spheres of radius 0.5 cm each. How many such small balls can be made?

SSC CGL 2020
A)

32,000

B)

6400

C)

64,000

D)

3200

16)

The perimeter of a square is 64 cm. Its area will be:

SSC CGL 2020
A)

256 $$cm^2$$

B)

32 $$cm^2$$

C)

$$cm^2$$

D)

128 $$cm^2$$

17)

The diagonal of a square A is (a + b) units. What is the area (in square units) of the square drawn on the diagonal of square B whose area is twice the area of A?

SSC CGL 2020
A)

$$2(a+b)^2$$

B)

$$4(a+b)^2$$

C)

$$8(a+b)^2$$

D)

$$(a+b)^2$$

18)

One diagonal of a rhombus is 8√3 cm. If the other diagonal is equal to its side, then the area (in $$cm^2$$ ) of the rhombus is:

SSC CHSL 2021
A)

16√3

B)

32√3

C)

12√3

D)

24√3

19)

Find the area (in cm2) and the diameter (in cm), respectively, of a circle whose circumference is 40π cm?

SSC CHSL 2021
A)

400 π and 40

B)

40 and 400 π

C)

400 and 40

D)

40 and 400

20)

What is the area (in $$m^2$$, up to 1 place of decimal) of an equilateral triangular field of side 8.5 m?

SSC CHSL 2021
A)

$$\frac{18.1}{\sqrt{3}}$$

B)

$$18.1\sqrt3$$

C)

$$\frac{72.25}{\sqrt{3}}$$

D)

$$72.25\sqrt3$$

showing 11 - 20 results of 100 results