Question

The surface area of a closed hemisphere is 150 cm square, then the surface area of the sphere with same measure is how many cm2?​

Answer 1

Step-by-step explanation:

Total surface area of hemisphere is 3πr^2

$3\pi {r}^{2} = 150 \\ {r}^{2} = 150 \div( \ 3 \times 3.14) \\ {r}^{2} = 16 \\ r = 4$

Surface area of Sphere = 4πr^2

$4 \times 22 \times 4 \times 4 \div 7 \\ 201.15$

Surface area of sphere = 201.15 cm2

Answer 2

Answer:

199.96 cm²

Step-by-step explanation:

surface area of closed hemisphere =3Πr²

150 =3×3.14×r²

150=9.42×r²

150/9.42=r²

r²=15.92c.m.

surface area of sphere = 4Πr²

=4×3.14×15.92

=12.56×15.92

=199.96 c. m.²