Answer:
112 cm²
Step-by-step explanation:
The surface area is the sum of the area of all the 6 faces, that is
area = area of 2 purple + area of 2 green + area of 2 orange
= 2(4 × 8) + 2(2 × 8) + 2(4 × 2)
= (2 × 32) + (2 × 16) + (2 × 8)
= 64 + 32 + 16
= 112 cm²
The correct answer is A.
Hope this helps.
C
Here's the easy way. There are 3 equations. One of the equations uses y=1. So it must be C.
because 2 and 3 are all prime factors