What does letters in multiplication mean

answer: it means to times or multiply two quotations together to to get an answer.

step-by-step explanation:

1.first set up your problem correctly.

2.solve the problem.

3. make sure it is correct.

4. so like 14 x 2=4 x 2= 8 1 x 2 = 2 so it is 28.

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

probably .5

i can on others if necessary.