What is the area of the figure?

21 mm²

77 mm²

133 mm²

154 mm²

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3