# A well of radius 3•6 m is dug 16 m deep. The earth removed is spread over an area of 400 m2 to form a platform. Height of the platform is

1.  1.54 m

2.  154 m

3.  7.7 m

4.  77 m

4

1.54 m

Explanation :
No Explanation available for this question

# The ratio of the number of sides of two regular polygons is 1 : 2. If each interior angle of the first polygon ie 1200 then the measure of each interior angle of the second polygon is

1.  1400

2.  1350

3.  1500

4.  1600

4

1500

Explanation :
No Explanation available for this question

# The area of the region bounded by Y= |X|- 5 with the co-ordinate axes is

1.  25 sq. units

2.  52 sq. units

3.  50 sq. units

4.  20 sq. units

4

25 sq. units

Explanation :
No Explanation available for this question

# Find the value of a3 + b3 + c3 - 3abc when a = 225, b = 226, c = 227.

1.  2304

2.  2430

3.  2034

4.  2340

4

2034

Explanation :
No Explanation available for this question

# Two concentric circles having common centre `0' and chord AB of the outer circle intersect the inner circle at points C and D. If distance of chord from the centre is 3 cm, outer radius is 13 cm and inner radius is 7 cm, then length of AC in cm is

1.  8 √10

2.  6 √10

3.  4 √10

4.  2 √10

4

2 √10

Explanation :
No Explanation available for this question

# If PT ia a tangent and AB is a chord of a circle and they intersect at the point P externally and PT = 2AP and AB = 18 units, then PT =

1.  6 units

2.  9 units

3.  12 units

4.  15 units

4

12 units

Explanation :
No Explanation available for this question

# In ΔABC, DE ll BC where DE intersects AB and AC at the points D and E respectively. If AD = 6cm, DB = 12x - 6cm, AE = 2x cm and CE = 16 - 2x cm, then the value of x is

1.  6

2.  4

3.  2

4.  8

4

2

Explanation :
No Explanation available for this question

# If the sides of a quadrilateral ABCD touch a circle and AB = 6 cm, CD = 5 cm, BC = 7 cm, then the length of AD in cm is

1.  4

2.  6

3.  8

4.  9

4

4

Explanation :
No Explanation available for this question

# PQ is a chord of length 6 cm of a circle of radius 6 cm. Tangents to the circle at P and Q meet at T, Length of TP is

1.  4.76 cm

2.  2.76 cm

3.  4.75 cm

4.  4.25 cm

4

4.75 cm

Explanation :
No Explanation available for this question

1.  (√3—1) km

2.  (√3+1) km

3.  (√3—2) km

4.  (√3+2) km

4