6.4
1/2 * 5.4 * 7.1 sin60
Mark brainliest please
Answer:
A perfect square is an integer that results in another integer when square rooted.
Step-by-step explanation:
For example:
16 is a perfect square because
= 4.
16 and 4 are both integers
Also, notice that 4 x 4 = 16
1/2*1/2 is 1/4*1/2 is 1/8. 3/2 divided by 2/3 is the same as 3/2*3/2 which is 9/4, plus 1/8 is 19/8 or 2 3/8