Question

A sphere has a volume of 80cm3. 3 Calculate the radius of the sphere. [The volume, V, of a sphere with radius r, is V = 4 πr]

Answer 1

Answer:

the answer is 6.33 cm

Step-by-step explanation:

volume=80cm³

80=4*22/7*r

80*7/4*22=r

r=6.33cm

Answer 2

The radius is 2.67303 cm.
Explanation:
The formula for the volume of a sphere is
V
=
4
3
π
r
3
, where
V
is volume,
π
is pi, and
r
is the radius.
The given volume is
80 cm
3
. Put this into the formula.
80
cm
3
=
4
3
π
r
3
Multiply both sides by
3
.
80
cm
3
×
3
=
4
π
r
3
Simplify.
240
cm
3
=
4
π
r
3
Divide both sides by
4
π
.
240
cm
3
4
π
=
r
3
Simplify.
19.099 cm
3
=
r
3
Take the cubed root of both sides.
3
√
19.099
cm
3
=
3
√
r
3
2.67303 cm
=
r
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