Question

Tolong ya no 7. itu diameternya 40 jari2 nya 20

Answer 1

V. tabung = L. alas x tinggi
= phi . r² x tinggi
= 3,14 . 20² x 28
= 3,14 x 400 x 28
= 1256 x 28
= 35.168 cm^3

Answer 2

Luas volume tabung : V = π.r².t
π = 22/7 atau 3,14
r = 20 cm
t = 28 cm

V = 22/7 x 20 cm x 20 cm x 28 cm
V = 35.200 cm³


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