ada yg tau no 28 ? makasih

Phi x r x r x tinggi

28 ) Volume
= π × r × r × t
= 22/7 × ( 21 ÷ 2 ) × ( 21 ÷ 2 ) × 20
= 22/7 × 10,5 × 10,5 × 20
= 6.930 cm3

☆ A ☆