Apiece of chocolate candy, composed of two congruent triangular prisms like the one shown below, is filled with caramel.

note: figure is not drawn to scale.

if a = 1.8 cm, b = 1.1 cm, and c = 2.1 cm, how much caramel can fit inside the piece of candy?
a.
3.564 cu cm
b.
5 cu cm
c.
2.079 cu cm
d.
4.158 cu cm

answer;

the correct answer

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5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

i think the answer is b

is there more to this question?