The area of a rhombus is 216 cm and the length of its one diagonal is 24 cm. The perimeter(in cm) of the rhombus is
60
A metallic sphere of radius 10.5 cm is melted and then recast into small cones each of radius 3.5 cm and height 3 cm. The number of cones thus formed is
126
If the ratio of the diameters of two right circular cones of equal height be 3:4. Then the ratio of their volumes will be
9:16
The value of tan 10° tan 15° tan 75° tan 80° is
1
if sin 7x=cos 11x, then the value of tan 9x + cot 9x is
2
Two numbers 11284 and 7655, when divided by a certain number of three digits, leaves the same remainder. The sum of digits of such a three-digit number is
11
The sides of a triangle are 16 cm, 12 cm and 20 cm. Find the area
96 cm²
What is the height of a cylinder that has the same volume and radius as a sphere of diameter 12 cm?
8 cm
The perpendiculars, drawn from the vertices to the opposite sides of triangle, meet at the point whose name is
orthocentre
The length of a read is one kilometre. The number of plants required for plantation at a gap of 20 metres in both sides of the road is