Question 891785
The area of the triangle is
{{{ (1/2)*b*h  = (1/2)*5*h }}} cm2
given:
{{{ (1/2)*5*h = 15 }}} cm2
{{{ 5h = 30 }}} 
{{{ h = 6 }}}
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The diameter of the circle equals this height, so
{{{ d = 6 }}}
and the radius is half of this, so,
{{{ r = 3 }}}
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The area of the circle is
{{{ A = pi*r^2 }}}
{{{ A = pi*3^2 }}}
{{{ A = 9*pi }}}
The answer is (B)