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Question Number 89755 by naka3546 last updated on 19/Apr/20

Commented by john santu last updated on 19/Apr/20

576 cm^2

$$\mathrm{576}\:{cm}^{\mathrm{2}} \\ $$

Answered by $@ty@m123 last updated on 19/Apr/20

A=24^2 −π×12^2   =576−144π  =123(3/7) cm^2

$${A}=\mathrm{24}^{\mathrm{2}} −\pi×\mathrm{12}^{\mathrm{2}} \\ $$$$=\mathrm{576}−\mathrm{144}\pi \\ $$$$=\mathrm{123}\frac{\mathrm{3}}{\mathrm{7}}\:{cm}^{\mathrm{2}} \\ $$

Commented by $@ty@m123 last updated on 19/Apr/20

Commented by john santu last updated on 19/Apr/20

Commented by john santu last updated on 19/Apr/20

I = 24^2 −144π  II = 144π  shaded area = I+II = 576

$${I}\:=\:\mathrm{24}^{\mathrm{2}} −\mathrm{144}\pi \\ $$$${II}\:=\:\mathrm{144}\pi \\ $$$${shaded}\:{area}\:=\:{I}+{II}\:=\:\mathrm{576} \\ $$

Commented by $@ty@m123 last updated on 19/Apr/20

Oh...Yes.  Thanks for correction.

$${Oh}...{Yes}. \\ $$$${Thanks}\:{for}\:{correction}. \\ $$

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