A scale on a map shows that 3 centimeters represents 10 kilometers.What number of centimeters on the map represents an actual distance of 25 kilometers?centimeters
Q. A scale on a map shows that 3 centimeters represents 10 kilometers.What number of centimeters on the map represents an actual distance of 25 kilometers?centimeters
Determine Scale Factor: We need to determine the scale factor that relates centimeters on the map to kilometers in reality. The scale given is 3 centimeters for 10 kilometers. To find the scale factor, we divide the number of kilometers by the number of centimeters. Scale factor = 3 centimeters10 kilometers.
Find Centimeters for 25 Kilometers: Now we need to use the scale factor to find out how many centimeters represent 25 kilometers.We set up a proportion where the number of centimeters (which we are trying to find) is to 25 kilometers as 3 centimeters is to 10 kilometers.Let x be the number of centimeters that represent 25 kilometers.So, 25 kilometersx=10 kilometers3 centimeters.
Set Up Proportion: To solve for x, we cross-multiply and get: 10 kilometers ∗x=3 centimeters ∗25 kilometers.
Cross-Multiply to Solve: Now we solve for x:x=(3centimeters×25kilometers)/10kilometers.
Perform Calculation: We perform the calculation: x=(75centimeters)/10. x=7.5centimeters.