" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
pnjang diagonal 30 cm
dit= luas= ...?
penyelesaian=
kel= 4.s
100= 4.s
100
s= -----
4
s= 25
luas= 1/2. d1. d2
mis= d1= 30 cm, maka panjang d2 kita cari menggunakan rumus pythagotras.
x= √( (25)² - (15)²)
= √(625 - 225)
=√400
=20 cm
maka,
L= 1/2. d1. d2
= 1/2. 30. 40
= 15. 40
=600 cm² (D)
semoga membantu