2. ????? ????? ???????? \( 100 \pi \mathrm{cm}^{2} \). ??????? ???? ????: a) \( 100 \pi \mathrm{cm} \) ?) \( 50 \pi \mathrm{cm} \) ?) \( 20 \pi \mathrm{cm} \) ?) \( 40 \pi \mathrm{cm} \) 3. ???? ???? ?????????? ??????????? ?????? 1,3 , i 5 , ?? ???? ?????????? ??? ????????: a) \( 45^{\circ} \) ?) \( 60^{\circ} \) ?) \( 80^{\circ} \) ?) \( 100^{\circ} \) 4. ??? ??????? ????????????? 6 ?? ? \( 14 \mathrm{~cm} \), ????????? ??? \( 30^{\circ} \), ???? ???? ????? ????????: a) \( 42 \mathrm{~cm}^{2} \) ?) \( 60 \mathrm{~cm}^{2} \) B) \( 84 \mathrm{~cm}^{2} \) ?) \( 120 \mathrm{~cm}^{2} \) 5. ???? ?? ?????? ?????????? ?? 10 ?? ????? ?? ????, ? ??? ??? ???? ????????? ???????? \( 60^{\circ} \). ???????? ?????? ? ??? ??????, ???? ????? ??????? ?????????? ???????? \( 14 \mathrm{~cm} \). 6. ???????? \( A M \) - ?????????? ?????????? \( A B C, A B=21 \mathrm{~cm}, A C=28 \mathrm{~cm} \), \( C M-B M=5 \) ??. ???????? ??????? \( B C \). 7. ?????????????, ?????????? ? ????? ???????? ?????????? ????? ?? ???? ???????, ?????? ?? ?? ???????? ???????? \( 4 \mathrm{~cm} \) ? \( 25 \mathrm{~cm} \). ???????? ????? ?????. 8. ????? ???????? ????????? ??????? ????? ??? ??????? ?????? ???????? ???????? ?? ?????? ??????. ???????? ????? ????????, ???? ?? ????? ??????? ?????????? \( 13 \mathrm{~cm} \) ? \( 20 \mathrm{~cm} \), ? ?????? \( -12 \mathrm{~cm} \).
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### Question 4: Area of a Sector **Given:** A sector with a radius \( r = 14 \mathrm{~cm} \) and a central angle \( \theta = 30^{\circ} \). **Find:** The area of the sector. #### Show more…
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