How do you use coordinates to find the perimeter and area of polygons?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain

Me! i will mark you brainliest if you are right and show your i don't get polynomials and all the other stuff. multiply and simplify.2x(^2)y(^3)z(^2) · 4xy(^4)x(^2)show your