Tolong kak ...... sebuah krucut dengan jari-jari 14 cm ,tingggi 10 cm , tentukanlah : 1. Luas alas 2. Luas selimut 3. volum krucut
5dregensleyer
Luas alas La = π x r² = 22/7 x 14 x 14 = 22 x 2 x 14 = 616 cm² luas selimut s = √14²+10² = √196+100 = √296 = 17,2 Ls = π x r x s = 22/7 x 14 x 17,2 = 22 x 2 x 17,2 = 756,8 cm² voume = 1/3 x π x r² x t = 1/3 x 22/7 x 14 x 14 x 10 = 1/3 x 22 x 2 x 14 x 10 = 1/3 x 6160 = 2053,34 cm³
La = π x r²
= 22/7 x 14 x 14
= 22 x 2 x 14
= 616 cm²
luas selimut
s = √14²+10²
= √196+100
= √296
= 17,2
Ls = π x r x s
= 22/7 x 14 x 17,2
= 22 x 2 x 17,2
= 756,8 cm²
voume = 1/3 x π x r² x t
= 1/3 x 22/7 x 14 x 14 x 10
= 1/3 x 22 x 2 x 14 x 10
= 1/3 x 6160
= 2053,34 cm³