Use distributive property
4x - 4 = 12 - 4x
8x = 16
X = 2
Answer:
It has 20 regular triangular faces, 30 square faces, 12 regular pentagonal faces, 60 vertices, and 120 edges.
Step-by-step explanation:
hope this helped
Of course you already know everything parallel sides are equals
therefore the value of each variables will be as following :
left side = right side
3y-6=24
3y=24+6
3y=30
y=30/3
y=10
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5x+2=12
5x=12-2
5x=10
x=10/5
x=2
The equation for cuircumference is 2

r
so your answer would be either ( 78 Pi ) for an exact answer
or for decimal form it would be ( 245.044 )