15.
luas trapesium = ½(a + b)t
50 = ½(4+b)5
100 = 20 + 5b
100 - 20 = 5b
80 = 5b
b = 16 cm
BC
√12² + 5²
√144 + 25
√169
13 cm ( b)
16. keliling = 4s
100 = 4s
s = 25 cm
luas
d1 x d2/2
48 x 14/2
336 cm²(a)
17. panjang BC
√15² - 12²
√225 - 144
√81
9 cm
luas ABCD
9 x 12
108 cm² ( b)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
15.
luas trapesium = ½(a + b)t
50 = ½(4+b)5
100 = 20 + 5b
100 - 20 = 5b
80 = 5b
b = 16 cm
BC
√12² + 5²
√144 + 25
√169
13 cm ( b)
16. keliling = 4s
100 = 4s
s = 25 cm
luas
d1 x d2/2
48 x 14/2
336 cm²(a)
17. panjang BC
√15² - 12²
√225 - 144
√81
9 cm
luas ABCD
9 x 12
108 cm² ( b)