" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2 C
3 A
4 sama 5 isi sendiri ya
96 = 1/2 x 16 x d2
96 = 8 x d2
96 : 8 = d2
12 cm = d2
sisinya = √8² + 6²
= √64 + 36
= √100 = 10 cm
K = 4 x s
= 4 x 10
= 40 cm (C)
2) K = 4 x s
52 = 4 x s
52 : 4 = s
13 cm = s
d2 = √13² - 12²
= √169 - 144
= √25 = 5
= 5 x 2 = 10 cm
L = 1/2 x d1 x d2
= 1/2 x 24 x 10
= 120 cm² (C)
3) K = a + b + b (karena segitiga sama kaki, maka 2 sisinya sama panjang)
36 = 10 + 2b
26 = 2b
13 = b
t = √13² - 5²
= √169 - 25
= √144 = 12 cm
L = 1/2 x a x t
= 1/2 x 10 x 12
= 60 cm² (A)