a wooden sphere has a radius 3.5cm. the density of wood is 0.9g per cm³. what is the mass of wooden sphere?
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Given ;
Radius , r = 3.5cm
So ,,,
Volume of wooden sphere
= 4/3πr^3
= 4/3 × 22/7 × (3.5)^3
= 539cm ^3
Mass of Wooden sphere = ( Density × volume)of wooden sphere
= 0.9 × 539
= 485.1 gm/cm^3
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