" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
l = 3x
t = 5x
K = 4(p + l + t)
120 = 4(2x + 3x + 5x)
120 = 4(10x)
120 = 40x
x = 120/40
x = 3
p = 2x = 2(3) = 6 cm
l = 3x = 3(3) = 9 cm
t = 5x = 5(3) = 15 cm
Lp = 2(pl + pt + lt)
=> 2(6(9) + 6(15) + 9(15))
=> 2(54 + 90 + 135)
=> 2(279)
=> 558 cm²