Subtract the area of the (presumed) circular piece from the area of the square piece from which it is cut. This difference is what is left over. What do you find?
Hello, rcs!
A circular piece with a 1.8m diameter is cut from a 2m by 2m piece of cloth.
How much cloth is wasted?
Did I really have to draw you a picture?
The cloth has an area of:.Code:_ *---------------------------* : |:::::::::::::::::::::::::::| : |:::::::::::* * *:::::::::::| : |:::::::* *:::::::| : |:::::* *:::::| : |::::* *::::| : |:::: ::::| |:::* *:::| 2 |:::* * - - - - *:::| |:::* 0.9 *:::| : |:::: ::::| : |::::* *::::| : |:::::* *:::::| : |:::::::* *:::::::| : |:::::::::::* * *:::::::::::| : |:::::::::::::::::::::::::::| - *---------------------------* : - - - - - - 2 - - - - - - :
The circle has a radius of
Its area is:.
The waste (shaded area) is:.