Question

Tolongbantu.pake cara ya.

Answer 1

1. (P*4) + (l*4) + t*4) (17*4) + (10*4) + ( 8*4) =68+40+24 =132

Answer 2

1) p.kawat = 6 m = 600 cm
p.rusuk balok = 4.(p+l+t)
= 4.(17+10+8)
= 4.35
= 140 cm
jadi, sisa kawat = 600 - 140 = 460 cm


2) l² = p² - ( r1-r2)²
24² = 25² - (16-r2)²
576 = 625 - (16-r2)²
(15-r2)² = 625 - 576
(15-r2)² = 49
15-r2 = √49
15-r2 = 7
-r2 = 7-15
-r2 = -8
r2 = 8