The diameter of a circle is two times its radius. Which equation shows
another way to represent the area of a circle?
• A = 70 /
• A=T
• A= 2nd
A=47d2

im pretty sure the answer is b, i hope i < 3

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.