indirakusuma
4. V= 1/3 L x t =1/3 x 360 x24 = 2880 cm³ 5. V = 1/3 L x t = 1/3 x 15 x 12 x 18 = 1080 cm³ 6. L alas = 12x10 = 120 tinggi = volume / L alas = 600 / 120 = 5 cm
7. tinggi segitiga = √(√3)² - (2/2)² = √3-1 = √2 L TAB = 1/2 x 2 x √2 = √2 dm² panjang diagonal alas = √2²+2² = √8 = 2√2 dm Tinggi limas = √(√3)² - (2√2/2)² = √3-2 = √1 = 1 dm volume = 1/3 x 2 x 2 x 1 = 4/3 dm³
5. V = 1/3 L x t = 1/3 x 15 x 12 x 18 = 1080 cm³
6. L alas = 12x10 = 120
tinggi = volume / L alas = 600 / 120 = 5 cm
7. tinggi segitiga = √(√3)² - (2/2)² = √3-1 = √2
L TAB = 1/2 x 2 x √2 = √2 dm²
panjang diagonal alas = √2²+2² = √8 = 2√2 dm
Tinggi limas = √(√3)² - (2√2/2)² = √3-2 = √1 = 1 dm
volume = 1/3 x 2 x 2 x 1 = 4/3 dm³