tolong jawab nomer 29 & 30 saja terimakasih :)

29.L¹=58×14×½
=812×½
=406 cm²

L²=22/7×7×7×½
=154×½
=77 cm²

L¹+L²=406+77
=483 cm²

30.L=3,14×24×24×¾
=1.808,64×¾
=1.356,48 cm²

maaf kalo salah

semoga membantu