Question

the surface area of hemisphere is 308 cm2 then it's radius is​

Answer 1

Answer:

Here, radius of the hemisphere = 7 cm. Hence, the curved surface area of the hemisphere is 308 cm2 and the total surface area is 462 cm2.

Step-by-step explanation:

Answer 2

Answer:

the radius of given hemisphere is 7cm

Step-by-step explanation:

given, surface area of hemisphere = 308 cm²

curved surface area of hemisphere = 2πr²

here π = $\frac{22}{7}$

to find the radius, we substitute the values in the formula

then we get,

308 cm² = 2*$\frac{22}{7}$*r²

r² = 308*$\frac{7}{22}$*$\frac{1}{2}$

r² = 49

r = 7 cm

hence the radius of given hemisphere is 7 cm.