S=6a²
a=8mm
S = 6 * 8² = 6 * 64 = 384 mm²
$42.60. You multiply 35.50 by .20 (that's decimal version of 20%) which equals 7.10. Then you add 35.50+7.10=42.60
In expanded form, the answer would look like this:
100,000 + 10,000 + 4,000 + 6
In standard form:
692,004
it is already in standard form
You may ask any questions???
