volume kerucut yang jari jarinya 7 cm dan panjang garis pelukis 25 cm,dengan phi=22/7adalah

r = 7 cm
s = 25 cm

t² = s² - r²
t² = 25² - 7²
t² = 625 - 49
t² = 576
t = √576
t = 24 cm

Volume = 1/3.π.r².t
V = 1/3 x 22/7 x 7 x 7 x 24
V = 22 x 7 x 8
V = 1.232 cm³

t^ = 25^ - 7^
t^ = 625 - 49
t^ = 576
t = 24

V = 1/3phi r^t
V = 1/3(22/7)(7)(7)(24)
V = 8(22)(7)
V = 1232 cm3