Question

33&34
makasih ^_^ .....

Answer 1

34) luas 15 buah belahan bola = 15 x ( 2 x phi x r x r )
= 15 x ( 2 x 3,14 x 2 x 2 )
= 15 x 25,12
= 376,8 m prsegi.
jwbnny adalah b.

Answer 2

33. Lp = L bola + L selimut
= 4πr² + 2πr.AC
= 2πr (2r + AC)
= 2.22/7. 7/2 ( 2.7/2 + 10)
= 22. 17
= 374 cm²

34. L bahan = 15 x L 1/2 bola
= 15 x ( 1/2. 4πr²)
= 30πr²
= 30. 3,14. 2²
= 376,8 m²