Answer:
The surface area is 270in units squared
49 5/8 or, if you would like it in decimal form, 49.625
-2/3a-6=12a
-6=12a+2/3a
-6=38/3a
3/38*-6=a
-18/38=a
a=-9/19
a=-0.47
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Ok
so paid 16
20% off
original-20%=16
that means the shorts were 100-20=80% of the original cost
percent means parts out of 100
80%=80/100=0.80
16=0.8 of ogirinal cost
'of' means mutpliy
16=0.8 times original
divide both sides by 0.8
16/0.8=ogirinal
20==originall
$20=original price