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1. A field is 500 metres long and 30 metres broad; and a tank 50 m long, 20 metres broad and 14 metres deep is dug in the field and the soil taken out of it spread evenly over the field. How much is the level of field raised?

0.5 metre

1 metre

1.5 metre

2 metre

2. In the triangle ABC, side BC is produced to D. ∠ACD = 100°. If AB = AC, then the ∠ABC is

40°

50°

80°

60°

3. In ABC , AB^{2} + AC^{2} = 2500 cm^{2} and median AD = 25 cm. Find BC.

25 cm

40 cm

50 cm

48 cm

4. If A + B + C = , then tan A + tan B + tan C equals to

cot A tan B tan C

tan A cot B tan C

tan A tan B tan C

None of these

5. tan x . tan 2x = 1. then find the value of x.

30°

45°

15°

5. If the vertices of a triangle are (1, 2), (4,-6) and (3, 5) then its area is

5 sq.unit

12 sq.unit

25/2 sq.unit

25 sq. unit