Step-by-step explanation: When the bases of two exponents are the same (in this case, they are both 3), and they are being multiplied, then their powers will be added together. -4 plus 6 is 2, so the new exponent will be 3^2.
if the base is 8 inches then your left with 120 and a triangle is seperated in 3 differnt parts so the 8 inches are already taken by the base so 120/2=60
