" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
40 = 4 x s
s = 40 : 4
= 10 cm
L = s x s
= 10 x 10
= 100cm²
s = √12² + 5²
= √144 + 25
= √169
= 13cm
L permukaan = L.alas + 1/2 x K.alas x s
= 100 + 1/2 x 40 x 13
= 100 + 260
= 360cm²