A solid copper sphere of radius 1.2 cm is converted into a right circu – McqOptions

MCQOPTIONS

1.	A solid copper sphere of radius 1.2 cm is converted into a right circular cylinder rod of length 16 cm. The ratio of total surface area of the rod to the sphere is
A.	7 : 3
B.	7 : 4
C.	7 : 5
D.	7 : 6
Answer» E.

Discussion

No Comment Found

Related MCQs

The ratio of inradius and circumradius of an equilateral triangle is:
In circular measure, the value of the angle 11015 is :
If the area of a triangle is 1176 cm2 and the ratio of base corresponding altitude is 3 : 4, then the altitude of the triangle is :
If the circumference of a circle increases from 4 to 8 , what change occurs in its area?
The radius of the incircle of a triangle is 2 cm. If the area of the triangle is 6 cm2. Then its perimeter is -
Let ABCD be a quadrilateral. Let the diagonals AC and BD meet at O. Let the perpendicular drawn from A to CD meet CD at E. Further, AO: OC = BO: OD, AB = 30 cm. CD = 40 cm. and the area of the quadrilateral ABCD is 1050 cm2. What is BE equal to?
In a triangle, two sides of 4 cm and 3 cm are at right angle. If the triangle is revolved along the 4 cm side, the curved surface area of the cone so formed will be
The volume of the largest right circular cone that can be cut out of a cube of edge 14 cm.
ABCD is cyclic quadrilateral and O is the center of the circle. If COD = 140o and BAC= 40o, then the value of BCD is equal to-
Two circle C1 and C2 touch each other internally at P. Two lines PCA and PDB meet the circles C1 in C, D and C2 in A, B respectively. If BDC = 120o, then the value of ABP is equal to -