Answer:
B. 
Step-by-step explanation:
Let 
, we solve for 
by algebraic means.
1) Given
2) 
Definition of power/Symmetry of equality
3) 
Compatibility with addition/Commutative and associative properties/Existence of additive inverse/Modulative property
4) 
5) Result
Hence, the correct answer is B.
Surface area of a prism=2(long x wide)+2(long x high )+2(wide x high)
Data:
long=5 m
wide=2 m
high=2 m
Surface area of this prism=2(5 m * 2 m)+2(5 m*2 m)+2(2 m*2m)
=2(10 m ²)+2(10 m²)+2(4 m²)
=20 m²+20 m²+8 m²
=48 m²
Answer: C 48 m²
