Please help me with these two questions. Find the circumference AND area for the circles on the right. (I will mark brainliest)

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.