Question

On a blueprint with a scale of 1 cm = 4 ft, the length of the wall is 9 cm. If the scale of the blueprint were 1 cm = 3 ft, whats would be the length of the wall?

Answer 1

The length of the wall would be 12 cm

Explanation:

step 1

we know that

On a blueprint with a scale of 1 cm = 4 ft, the length of the wall is 9 cm

so

The actual length of the wall is equal to ------> 9*4=36 ft

step 2

If the scale of the blueprint were 1 cm = 3 ft

then

The length of the wall in the new blueprint would be ----> 36/3=12 cm