Please.. Yang bisa langsung jawab sama caranya ini PR untuk senin
subebe
Volume = p l t 40 = 4x 2x 5x 40 = 40x³ x³ = 1 x = 1 Panjang = 4x = 4 dm = 40 cm lebar = 2x = 2 dm = 20 cm tinggi = 5x = 5dm = 50 cm Luas permukaan = 2 (pl + pt + lt) = 2 (4 x 2 + 4x 5 + 2 x 5) = 2 (8 + 20 + 10) = 2 (38) = 76 dm² = 7.600 cm²
2. luas persegi = 14 x 14 = 196 luas tidak diasir atas = 196 - 1/4 x 22/7 x 14 x 14 = 196 - 154 = 42 Luas diasir = luas persegi - luas tak diasir atas - luas tak diasir bawah = 196 - 42 - 42 = 112 cm²
40 = 4x 2x 5x
40 = 40x³
x³ = 1
x = 1
Panjang = 4x = 4 dm = 40 cm
lebar = 2x = 2 dm = 20 cm
tinggi = 5x = 5dm = 50 cm
Luas permukaan = 2 (pl + pt + lt)
= 2 (4 x 2 + 4x 5 + 2 x 5)
= 2 (8 + 20 + 10)
= 2 (38)
= 76 dm² = 7.600 cm²
2. luas persegi = 14 x 14 = 196
luas tidak diasir atas = 196 - 1/4 x 22/7 x 14 x 14
= 196 - 154 = 42
Luas diasir = luas persegi - luas tak diasir atas - luas tak diasir bawah
= 196 - 42 - 42 = 112 cm²
3. 2x + 3y = 76.000 (x2) 4x + 6y = 152.000
4x + 5y = 140. 000 (x1) 4x + 5y = 140.000-
y = 12.000
2x + 3y = 76.000
2x + 3(12.000) = 76.000
2x + 36.000 = 76.000
2x = 40.000
x = 20.000
3ayam + 2 itik = 3x + 2y = 3(20.000) + 2(12.000)
= 60.000 + 24.000
= 84.000
x = 1
Panjang = 4x = 4 dm = 40 cm
lebar = 2x = 2 dm = 20 cm
tinggi = 5x = 5dm = 50 cm
Luas permukaan = 2 (pl + pt + lt)
= 2 (4 x 2 + 4x 5 + 2 x 5)
= 2 (8 + 20 + 10)
= 2 (38)
= 76 dm² = 7.600 cm²