An item is regularly priced at $50. It is on sale for 40% off the regular price. What is the sale price?

The sale price would be $30

First you would find 10% of $50 which is $5

Next you would multiply 10% by 4 to get 40%
So you have to do the same to the $5 to get $20

Lastly subtract $20 from $50 to get a total of

$30

A=bxh3.2x1.8=5.76 centimeters square