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- sisi alas limas = 10 cm
- tinggi bidang tegak = 13 cm
dit
a. t limas
b. L limas
jawab
a. tinggi limas
= t bidang tegak^2 - sisi alas : 2^2
= \/13^2 - 5^2
= \/169 - 25
= \/144
= 12 cm
b. luas limas (permukaan)
= La + (luas bidang tegak limas × 4)
= (10× 10) + ((13 × 10 ÷ 2) × 4)
= 100 + 260
= 360 cm2