Question

A wooden sphere has its radius 3.5 cm. The density of the wood is 0.9 g per cm3. The mass of the wooden sphere is

Answer 1

Answer:

Mass of the wooden sphere is 161.63 g.

Step-by-step explanation:

Radius of the wooden sphere = 3.5cm

Volume of the wooden sphere= (4/3)π×(3.5^3) =179.59cm3

The density of the wood is 0.9 g per cm3.

Therefore mass of the wooden sphere

=179.59×0.9 =161.63g.

Answer 2

The mass of the wooden sphere is 161.694 gram.

Step-by-step explanation:

Given : A wooden sphere has its radius 3.5 cm. The density of the wood is 0.9 g per cm³.

To find : The mass of the wooden sphere ?

Solution :

Radius of the wooden sphere is 3.5 cm .

The volume of the wooden sphere is  $V=\frac{4}{3}\pi r^3$

Substitute the value,

$V=\frac{4}{3}\times \frac{22}{7}\times (3.5)^3$

$V=\frac{4}{3}\times \frac{22}{7}\times 42.875$

$V=179.66\ cm^3$

The density of the wood is 0.9 g per cm³.

The mass of the wooden sphere  is

$M=179.66\times 0.9$

$M=161.694\ g$

Therefore, the mass of the wooden sphere is 161.694 gram.

#Learn more  

A cylindrical container is filled with ice-cream, whose radius is 6 cm and height is 15 cm. The whole ice-cream is distributed to 10 children in equal cones having hemispherical tops. If the height of the conical in equal cones having hemispherical tops. If the height of the conical portion is 4 times the radius of the base, find the radius of the ice-cream cone.

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