What metric unit would you use to measure: the amount of water in a pool? the mass of an elephant? the length of a paperclip? pls

Which of the following is the correct ratio for converting kilograms to grams

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm