Find the length of wire required to fence a circular Park of diameter 280 M with three rounds

What is the length and width of a 84.5 square foot rug? will mark

Hey free points ! people i have a few math questions on my profile consider looking at them i have to get done in 30 mins!

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b