Question

Tolong kerjakan !!!!!!! no 2. d,e,f. no 4 dan 5

Answer 1

2d. r = 6 cm
K = phi . d
= 3,14 . 12
= 37,68
L = phi . r . r
= 3,14 . 6 . 6
= 113,04

e. r = 17,5
K = 3,14 . 35
= 109,9
L = 3,14 . 17,5 . 17,5
= (coba pake kalkulator ya hehe)

f. r = 20
K = 3,14 . 40
= 125,6
L = 3,14 . 20 . 20
= 1256

4. r = 1,5 m
L = phi . r . r
= 3,14 . 1,5 . 1,5
= 7,065

sori kalo salah