Triangle similarity please help

Match each graph with the correct equation from the equation bank. not all equations will be usef

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

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.