Math Help - how much clothing is wasted

1. how much clothing is wasted

Problem:

To allow for sewing and overlap, an 18 dm diameter piece is cut from 2m by
2m material. How much clothing material is wasted?

Can anybody help me how this be done and how it looks like .. thanks

2. Re: how much clothing is wasted

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?

3. Re: how much clothing is wasted

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?

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The cloth has an area of:. $2\times 2 \,=\,4\text{ m}^2$

The circle has a radius of $0.9\text{ m.}$
Its area is:. $\pi(0.9^2) \,=\,0.81\pi\text{ m}^2$

The waste (shaded area) is:. $4 - 0.81\pi\text{ m}^2$

4. Re: how much clothing is wasted

thank a lot one of the BESTS Sir Soroban. God Bless.