What are some potential biases that could occur when using the following survey techniques? In-person Mail Phone E-mail Text Social Media

How do you answer this question? (step by step)

Need on this one asap im almost done with this subject

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.