Luas selimut tabung yg keliling alasnya 62,8 cm dan tinggi tabung tabung 5 cm adalah... a. 314 cm b. 471 cm c. 628 cm d. 942 Luas selimut kerucut 550 cm, jika panjang diameter 14 cm, maka tingginya adalah.. A. 28 cm B. 25 cm C. 24 cm D. 21 cm Tolong sama caranya yaa :)
ichidamssecret
1) d = 62, 8 3, 14 x d = 62, 8 d = 20 r = 10 Ls Tabung = 2rt 2 x 3,14 x 10 x 5 = 314 (A)
2) Ls Kerucut = rs 22/7 x 7 x s = 550 22 x s = 550 s = 550 : 22 s = 25
=24 (C)
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ichidamssecret
Jangan lupa tandai jawaban yang terbaik ya
3, 14 x d = 62, 8
d = 20
r = 10
Ls Tabung = 2rt
2 x 3,14 x 10 x 5
= 314 (A)
2) Ls Kerucut = rs
22/7 x 7 x s = 550
22 x s = 550
s = 550 : 22
s = 25
=24 (C)