Question Number 84682 by Power last updated on 15/Mar/20
Commented by Power last updated on 15/Mar/20
$$\mathrm{find}\:\mathrm{the}\:\mathrm{painted}\:\mathrm{area}\:? \\ $$
Commented by mr W last updated on 15/Mar/20
$$\frac{\pi\mathrm{4}^{\mathrm{2}} }{\mathrm{4}}−\mathrm{6}×\frac{\pi\mathrm{1}^{\mathrm{2}} }{\mathrm{4}}−\mathrm{1}×\mathrm{1}=\frac{\mathrm{5}\pi}{\mathrm{2}}−\mathrm{1} \\ $$
Commented by Power last updated on 15/Mar/20
$$\mathrm{prove}\:\mathrm{it}\:\mathrm{sir}\:\mathrm{please} \\ $$
Commented by mr W last updated on 15/Mar/20
Commented by Power last updated on 15/Mar/20
$$\mathrm{thanks} \\ $$