Mathematics, 27.03.2020 01:47 jasminemmathlover

Can someone help me with these math problems?

1. The circumference of a circle is 31.4 inches. Find the radius of the circle in inches. Round to the nearest whole number. Justify your answer.

2. The radius of a circle is 7 centimeters.
Find the circumference of the circle, in centimeters. Round your answer to the nearest hundredth. Justify your answer.

3. Anna cuts two identical circles from a rectangular piece of black poster board as shown. (7.G.4)
What is the area of the leftover black poster board? Use 3.14 for π. Show your reasoning.

4. The circumference of the circle is approximately 100.48 centimeters. The shaded region is of the whole circle. Find the area of the shaded region in square cm. Round your answer to the nearest hundredth. Justify your answer.

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 19:10, madimocaj

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

Answers: 2

continue

Mathematics, 21.06.2019 19:20, gameranonymous266

Askyscraper is 396 meters tall. at a certain time of day, it casts a shadow that is 332 meters long. at what angle is the sun above the horizon at that time?

Answers: 1

continue

Mathematics, 21.06.2019 21:50, spookymod8967

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

Answers: 3

continue

Mathematics, 21.06.2019 22:30, scholarlystudenttt28

Which one is the correct answer, and why?

Answers: 1

continue

You know the right answer?

Can someone help me with these math problems?

1. The circumference of a circle is 31.4 i...