Keliling alas suatu kerucut 62,8 cm, sedangkan tingginya kerucut 12 cm. volume kerucut tersebut adalah
josephmanuel
Vkrucut = 1/3nr²t = 1/3 x Luas alas x T = 1/3 x 62,8 x 12 =251,20 cm³
0 votes Thanks 0
magica
Keliling alas = 2πr 62,8 = 2 x 22/7 x r 62,8 = 22/7 x 2r 2r = 62,8 / 22/7 = 20 r = 10 cm volume kerucut = 1/3πr²t = 1/3 x 3.14 x 10² x 12 =1256 cm³
= 1/3 x Luas alas x T
= 1/3 x 62,8 x 12
=251,20 cm³
62,8 = 2 x 22/7 x r
62,8 = 22/7 x 2r
2r = 62,8 / 22/7 = 20
r = 10 cm
volume kerucut = 1/3πr²t = 1/3 x 3.14 x 10² x 12 =1256 cm³