Question

Tolong jawab no 3 dan 5 dong kk,caranya gmna ya?

Answer 1

3.
Lp.tabung =2Πr(r+t)
Lp.tabung =2.22/7.0,7(0,7+2,8)
Lp.tabung =44/0,1(3,5)
Lp.tabung =154/0,1
Lp.tabung =1540
Lp.bola=1/2(4Πr²)
Lp.bola=1/2(4.22/7.0,7²)
Lp.bola=1/2(88/7.0,49)
Lp.bola=1/2(88. 0,07)
Lp.bola=1/2(6,16)
Lp.bola=3,08

Lp.bola+Lp.tabung =3,08+1540
Lp.bola+Lp.tabung =1543,08

5.
Lp.kerucut=Π.r.s+Π.r²
Lp.kerucut=22/7.2.7+22/7.2²
Lp.kerucut=44+88/7
Lp.kerucut=(308+88)/7
Lp.kerucut=396/7
Lp.bola=1/2(4Πr²)
Lp.bola=1/2(4.22/7.2²)
Lp.bola=1/2(352/7)
Lp.bola=352/14
Lp.bola=176/7

Lp.kerucut+ Lp.bola=396/7+176/7
=572/7
=81,7142.....

cek lagiiii,,,,
semoga dapat membantu,,