Question

Tolong jawab no 2,3,4 menggunakan jalan. ini soal isiann bukan pilgan. trima kasih ya bagi yang mau membantu

Answer 1

2. alas=20dm, tinggi = 24dm
Luas alas = 20x24/2 = 240 dm²
a. tp= 22dm
V = 240 x 22 = 5.280 dm³

b. tp = 32dm
V = 240x32 = 7.680 dm³

c. tp = 40 dm
V = 240x40 = 9.600 dm³

3. a. alas = 18 cm, tinggi = 21cm, V = 540 cm³
tp = 2V/at = 2x540/18x21 = 60/21 = 20/7 cm
b. alas = 24 cm, tinggi = 26 cm, V = 2.356 cm³
tp = 2x2.356/24x26 = 7 43/78 cm
v. alas = 40cm, tinggi = 32cm, V = 1.920 cm³
tp = 2x1.920/40x32 = 3 cm

4. a. alas = 2x15.000/40x60 = 12½ cm
b. alas = 2x15.000/60x50 = 10 cm
c. alas = 2x3.000/12x10 = 50 dm