(how to find the area of the circle). also (how to find the area of the figures). and (area of the circle using 3.14)

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

What expression is equivalent to (2x-1)(x-3)?