What is the surface area of this cylinder? Use A 3.14 and round your answer to the nearest hundredth.
7 yd
9 yd
square yards

Plzz make this fast

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.

A+b= 17, ab=70, find the value of |a-b|

Solve for the equation. 4x - 13 = 2x + 9