Jawaban:
375 cm²
Penjelasan:
K = 2.( p + l )
K = 2. ( ? + 15 )
K = (2 x 15) + ( 2 x ?)
80 = 30 + ?
= 80 - 30 = 50
= 50 : 2 = 25
P = 25 cm
L = 25 x 15
= 375 cm²
Rumus keliling persegi panjang :
K = 2 ( p + l )
80 cm = 2 ( p + 15 cm )
80 cm : 2 = ( p + 15 cm )
40 cm = ( p + 15 cm )
40 cm - 15 cm = p
25 cm = p
Rumus luas persegi panjang :
L = p × l
L = 25 cm × 15 cm
L = 375 cm^2
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Jawaban:
375 cm²
Penjelasan:
K = 2.( p + l )
K = 2. ( ? + 15 )
K = (2 x 15) + ( 2 x ?)
80 = 30 + ?
= 80 - 30 = 50
= 50 : 2 = 25
P = 25 cm
L = 25 x 15
= 375 cm²
Rumus keliling persegi panjang :
K = 2 ( p + l )
80 cm = 2 ( p + 15 cm )
80 cm : 2 = ( p + 15 cm )
40 cm = ( p + 15 cm )
40 cm - 15 cm = p
25 cm = p
Rumus luas persegi panjang :
L = p × l
L = 25 cm × 15 cm
L = 375 cm^2