Question

what is the value of ( b ) in the figure below?

a 280
b 300
c 340
d 350

Explanation:

Step1: Recall the total degrees in a circle

A full - circle has \(360^{\circ}\).

Step2: Set up the equation

We know that \(b + 20=360\) (since the sum of the angles in a circle is \(360^{\circ}\)).

Step3: Solve for \(b\)

Subtract \(20\) from both sides of the equation: \(b = 360 - 20\).

Answer:

\(b = 340\), so the answer is C.