Luas=(1/2 x 22/7 x 14 x 14) - (22/7 x 7 x 7)
=308 - 154= 154 cm2
Keliling=(1/2 x 22/7 x 28) + (22/7 x 14)
=44 + 44=88 cm
semoga benar dan bisa membantu, maaf kalo saya salah ya...
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Luas=(1/2 x 22/7 x 14 x 14) - (22/7 x 7 x 7)
=308 - 154= 154 cm2
Keliling=(1/2 x 22/7 x 28) + (22/7 x 14)
=44 + 44=88 cm
semoga benar dan bisa membantu, maaf kalo saya salah ya...