X2 + y2 =400 has center coordinates and a radius equal to ___

1: 4 if the wew 35 surfboards at the beach how many were short boards?

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?

597008.439431 to the nearest thousand