504 cone each diameter is 3.5 and height is 3 cm are melted and recast into a metallic sphere find diameter of sphere and its surface areas
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r=10.5
diameter=10.5×2
=21cm.
Now, surface area of sphere
=4×(22/7)×r^2
=4 ×22×1.5×10.5
=1386 sq.cm.
..hence ,
diameter of sphere =21 cm
surface area of sphere =1386 sq.cm.
diameter=10.5×2
=21cm.
Now, surface area of sphere
=4×(22/7)×r^2
=4 ×22×1.5×10.5
=1386 sq.cm.
..hence ,
diameter of sphere =21 cm
surface area of sphere =1386 sq.cm.
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hope it helps...?!!!
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visesh41:
bro you have taken the formula of volume of sphere wrong ,please check it once again
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