Nomor 1-5 SD 20Point

1. L. persegi = s * s = 14 * 14 = 196 cm'2
L. lingkaran = pi * r * r = 22/7 * 7 * 7 = 154 cm'2
L. diarsir = 196 - 154 = 42 cm'2

2. L. setengah lingkaran = 1/2 * 3,14 * 29 * 29 = 1.320,37 cm'2
L. persegi panjang1 = p * l = 62 * 58 = 3.596 cm'2'
L. persegi panjang 2 = 30 * 28 = 840 cm'2
L. bangun datar = 1.320,37+3.596-840 = 4.076,37 cm'2

3. v. prisma = 1/2 * 3,5 * 5 * 7 = 61,25 cm'3

4. luas alas = v/t = 232,5/10 = 23,25 cm'2

5. v. setengah tabung = 1/2 * pi * r * r * t = 1/2 * 22/7 * 21 * 21 * 90 = 124.740 cm'3

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