Jawaban:
d lingkaran = 28 cm
r lingkaran = 14 cm
k persegi panjang = (2 x 14) + (2 x 14 x 4) - (14 x 2)
= 28 + 112 - 28 = 112 cm
k setengah lingkaran = 2phiR = 2 x 22/7 x 14 = 88 cm : 2 = 44cm
k bangun = 112 + 44 = 156 cm
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Jawaban:
d lingkaran = 28 cm
r lingkaran = 14 cm
k persegi panjang = (2 x 14) + (2 x 14 x 4) - (14 x 2)
= 28 + 112 - 28 = 112 cm
k setengah lingkaran = 2phiR = 2 x 22/7 x 14 = 88 cm : 2 = 44cm
k bangun = 112 + 44 = 156 cm