Answer:
Step-by-step explanation:
here
total surface area(TSA)= 462 cm²
TSA=3πr²
462 = 3*22/7*r²
462*7=66r²
3,234=66r²
3,234/66=r²
49=r²
√(49=r
r=7
therefore the radia of the hemisphere is 7
now,
volume of hemisphere(V) = (2/3)πr²
V=(2/3)*(22/7)*7²
V=44*7
V=308
