Find the area of a regular pentagon with a side length of 14 and an apothem of 22.

The main area formula is A= 5x s x r/ 2
where s is a side
r is the radius, r can be found as following
r is the hypothenuse, so tanα=a/S, where S=s/2=7
tanα=22/7=Pi, so    α=arctanPi= 72.3°
for finding r, r = a/sin α=22/sin 72.3°=23
so finally 
the area is A= (5x 14x 23 )/2=808

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The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2