Jamal is making two paintings using canvases that are similar rectangles. the length of the smaller canvas is 3 ft and the width is 5 ft.
what is the length of the larger canvas if the width is 10 ft?

Let's start with what we know:

Smaller canvas:
Length () = 3ft
Width () = 5ft

Larger canvas:
Length () = ?
Width () = 10ft

Since these are similar rectangles, we can cross-multiply to calculate the missing length. Here's that formula:


So let's plug it all in from above:


Now we cross multiply by multiplying the top-left by the bottom-right and vice versa:



Now divide each side by 5 to isolate 


The 5s on the right cancel out, leaving us with:



So the length of the larger canvas is 6 ft

It’s 24.6 after you round to the nearest tenths the answer should be 25.0