81 is a composite number. It is a positive number that is divisible by some other number other than 1 and itself. 81 can be divided by 9 (9 x 9 = 81).
A is the answer. Hope this helps
V = 20 cm ^3
multiply 6 cm by 5 cm by 2/3 cm and your answer is 20cm^3
456.......................
Distribution method
(2x+6)(2x-6)
=4x^2-12x+12x-36
=4x^2-36
