If two solid hemispheres of same base radius are joined together along – McqOptions

MCQOPTIONS

1.	If two solid hemispheres of same base radius are joined together along their bases, then curved surface area of this new solid is
A.	3 r
B.	4 r
C.	5 r
D.	6 r
Answer» C. 5 r

Discussion

No Comment Found

Related MCQs

On decreasing each side of cube by 21%, its surface area decreases by?
What will be total cost of polishing curved surface of a wooden cylinder at rate of Rs. 20 per sq.m, if it has 40 cm diameter and 7m height?
2 cylinders have their radii into ratio 4:7. If their heights are in the ration of 21:8 then their volumes would be in what ratio?
Baskin n Robbin s biggest ice-cream cardboard cone has height of 24 cm and slant height of 25cm. One sheet of cardboard makes 8 such cones. What is area of the sheet?
Suresh wanted to keep volume of his right circular cone shaped cap same, but increase its height to 9 times. By how much should he increase or decrease the radius?
A solid rubber sphere weighs 6kg when its diameter is 6cm. Using the same material, a hollow sphere is made with outer diameter 18cm and inner diameter 12 cm. What is its weight?
A sphere with surface area (792/7) sq.m. has a volume ____
2 cm thick 14 metal plates are kept exactly one above the other. On the top plate a hemisphere of diameter 6cm is kept. This just covers the top plate. What is the volume of the entire object?
Ramesh s bedroom has a rectangular floor. He built the 4 walls of this room in Rs. 24000 at the rate of Rs. 20 per sq. m. What is height of his bedroom if perimeter of the floor is 150m?
The surface area of a sphere is same as the curved surface area of a right circular cylinder whose height and diameter are 12cm each. The radius of the sphere is.