Luas tabung tanpa tutup 3.454 cm2. Jika jari-jari alas tabung 10 cm maka volume tabung...cm3 a.14.700 b. 15.700 c. 16.700 d. 18.700 Tuliskan cara penyelesaiannya!!
khominghoo
Luas tabung tanpa tutup = πr(r+2t) 3.454 = 3,14 x 10 ( 10 + 2t ) 3.454/31,4 = 10 + 2t 110 - 10 = 2t t = 100/2 = 50 cm
Volume = πr²t = 3,14 x 10² x 50 = 15.700 cm³ jawaban : b
3.454 = 3,14 x 10 ( 10 + 2t )
3.454/31,4 = 10 + 2t
110 - 10 = 2t
t = 100/2 = 50 cm
Volume = πr²t
= 3,14 x 10² x 50
= 15.700 cm³
jawaban : b