5. SURFACE AREA
Area of square 1 = a x a
Area of square 2 = a x a
Area of square 3 = a x a
Area of square 4 = a x a
Area of square 5 = a x a
Area of square 6 = a x a
Surface Area = Area of all 6 faces
= 6a2
14. If we make a cone having radius and height
equal to the radius of sphere. Then a water
filled cone can fill the sphere in 4 times.
r
r
r
V=1/3 πr2h V1
If h = r then V1 = 4V = 4(1/3 πr3)
V=1/3 πr3 V1= 4/3 πr3