Question 871362
Let area = {{{ A }}}
Let the radius = {{{ r }}}
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{{{ A = pi*r^2 }}} is the formula for
the area of a circle
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given:
{{{ r = 7 }}}
{{{ A = pi*7^2 }}}
{{{ A = 49*pi }}}
Note that {{{ pi = 3.14159 }}} approximately
{{{ A = 49*3.14159 }}}
{{{ A = 153.938 }}}