Jawab:
Luas permukaan balok = 2 (pl + pt + lt)
Lp balok = 2 (10x10 + 10x180 + 10x180)
Lp balok = 2 (100 + 1800 + 1800)
Lp balok = 2 (3700)
Lp balok = 7400 cm²
Luas permukaan pyramid/limas = (Luas alas) + (4 x Luas sisi segitiga)
Lp pyramid = (10x10) +
Lp pyramid = 100 + (2 x 10 x 13)
Lp pramid = 100 + (20 x 13)
Lp pyramid = 100 + 260
Lp pyramid = 360 cm²
Luas gabungan = 7400 + 360 = 7760 cm²
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Jawab:
Luas permukaan balok = 2 (pl + pt + lt)
Lp balok = 2 (10x10 + 10x180 + 10x180)
Lp balok = 2 (100 + 1800 + 1800)
Lp balok = 2 (3700)
Lp balok = 7400 cm²
Luas permukaan pyramid/limas = (Luas alas) + (4 x Luas sisi segitiga)
Lp pyramid = (10x10) +
Lp pyramid = 100 + (2 x 10 x 13)
Lp pramid = 100 + (20 x 13)
Lp pyramid = 100 + 260
Lp pyramid = 360 cm²
Luas gabungan = 7400 + 360 = 7760 cm²