Question

Keliling bangun datar di atas adalah.... cm
Tolong di bantu aku kasih 100 poin,
pake cara!?​

Answer 1

[tex]12). Keliling \: bangun \\ 3d( \frac{\pi}{2} + 1) = 3d( \frac{18}{7} ) \\ \\ 3( 14 )(\frac{18}{7} ) = 108 \: cm \: (a) \\ \\ \\ 13). Keliling \: bangun \\ d( \frac{\pi}{2} + 4) = d( \frac{39}{7} ) \\ \\ 28( \frac{39}{7} ) = 156 \: cm \: (d)[/tex]