Chua Ee Ket,Joel's answer to Alex's Secondary 2 Maths question.

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Chua Ee Ket,Joel
Chua Ee Ket,joel's answer
71 answers (A Helpful Person)
1st
I may be wrong if the total surface area of hemisphere the question is referring to only refers to the curved surface area of a hemisphere. In that case just use the equation 2(pi)r^2=942 and solve for r. Hope this could be help to you.