CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

Question 4
A cubical block of side 7 cm is surmounted by a hemisphere. What is the greatest diameter the hemisphere can have?  Find the surface area of the solid.


Solution

The greatest diameter = side of the cube = 7 cm
Total surface area of solid = Surface area of cube – Surface area of base of hemisphere + Curved surface area of hemisphere
Surface area of cube =6×side2
=6×7×7=294 sq cm
Surface area of base of hemisphere
=πr2
=227×3.52=38.5 cm2
Curved surface area of hemisphere =2×38.5=77 sq cm
Total surface area =29438.5+77=332.5 sq cm

Mathematics

Suggest Corrections
thumbs-up
 
0


similar_icon
Similar questions
View More


similar_icon
People also searched for
View More



footer-image