What is the total surface area of a hemisphere of radius r? – McqOptions

MCQOPTIONS

1.	What is the total surface area of a hemisphere of radius r?
A.	4 r
B.	r
C.	2 r
D.	3 r
Answer» E.

Discussion

No Comment Found

Related MCQs

<p>On decreasing each side of cube by 21%, its surface area decreases by?</p>
<p>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?</p>
<p>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?</p>
<p>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?</p>
<p>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?</p>
<p>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?</p>
<p>A sphere with surface area (792/7) sq.m. has a volume ____</p>
<p>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?</p>
<p>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?</p>
<p>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.</p>