3. A toy is in the form of a cone of radius 3.5 cm mounted on a hemisphere of samen
The total height of the boy is 15.5 cm. Find the total surface area of the toy.
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Answer:
A≈213.21cm²
r Radius
3.5
cm
h Height
15.5
cm
Using the formulas
A=
π
r
l
π
r
2
l=
r
2
h
2
Solving forA
A=
π
r
r
h
2
r
2
=
π
3.5
3.5
15.5
2
3.5
2
≈
213.20692cm²
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