a. If the radiusof the circleis cm, how muchwire was usedto outlinethe shadedsections?- The circumferenceof a circleis feet. Whatis the radiusof the circle?
- A gear with a radiusof inchesturnsat a rate of RPM(revolutionsper minute).How far doesa
pointon the edgeof the pulleytravelin one second? - A centerpivotirrigationsystemhas a boomthat is m long.The boomis anchoredat the centerpivot.
It revolvesaroundthe centerpivotpointonceeverythreedays.How far doesthe tip of the boomtravelin
one day? - The radiusof Earthat the Equatoris about miles.Belem(in Brazil)and the GalapagosIslands(in
the PacificOcean)are on (or very near)the Equator. The approximatelongitudesare Belem, , and
GalapagosIslands,.
a. Whatis thedegreemeasureof themajorarc on the Equatorfrom Belemto the GalapagosIslands?b. Whatis the distancefrom Belemto the GalapagosIslandson the Equatorthe “longway around?”- A regularpolygoninscribedin a circlewith diameter has sides.Write a formulathat expressesthe
perimeter, , of the polygonin termsof. (Hint:Use trigonometry.)
- The pulleyshownbelowrevolvesat a rate of RPM.