Question

Tolong 23-30 dong....

Answer 1

Saya bantu sebagian ya.. rumusnya sama :)

23.
v = 61600 cm³
r = 14 cm

v = πr²t
61600 = 22/7 x 14 x 14 x t
61600 = 616 t
t = 61600/616
t = 100 cm (C)


24.
r = 30 cm
t = 40 cm

s² = r² + t²
s² = 30² + 40²
s² = 900 + 1600
s² = 2500
s = 50 cm (d).


25.
r = 14 cm
s = 30 cm

L selimut = πrs
L selimut = 22/7 x 14 x 30
L selimut = 1320 cm² (a)


26.
s = 30 cm
r = 15 cm

t² = s² - r²
t² = 30² - 15²
t² = 900 - 225
t² = 675
t = 25,98 cm

V = 1/3 πr²t
V = 1/3 x 3,14 x 15 x 15 x 25,98
V = 6118,29 cm³ (b)