The radius of a hemisphere is 6 inches. which formula can be used to find the surface area of the hemisphere?

s=3pi(12)^2
s=2pi(12)^2
s=2pi(6)^2
s=3pi(6)^2

The answer is S = 2(pi)(6)^2 if you're talking about lateral, and 3(pi)(6)^2 if you're talking about the base AND lateral.

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct

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