Question

tolong bantu aku ya ka...
no 2-3
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Answer 1

Penjelasan dengan langkah-langkah:

a. karena diameter = 20 cm

maka r = 0,5 x 20 = 10 cm

b. karena diameter = 18 cm

maka r = 0,5 x 18 = 9 cm

Answer 2

2. V = 4/3 x 3,14 x 10 x 10 x 10

= 4/3 x 3,14 x 1000

= 4/3 x 3.140

= 4.186,66 cm³

3. V kerucut = 1/3 x 22/7 x 9² x t

1188 = 3 x 7/22 x 81 x t

1188 = 54 x 3 x 7 = 1134 cm

t = 1134/81 = 14 cm