keliling= 2p + 2l
358 = 2(7x - 3) + 2(4x + 17)
358 = 14x - 6 + 8x + 34
358 + 6 - 34 = 14x + 8x
330 = 22x
x = 330/22
x = 15 meter
lebar
4x + 17
4(15) + 17
60 + 17
77 meter
panjang
7x - 3
7(15) - 3
105 - 3
102 meter
Nilai X :
K = 2 ( p + l )
358 = 2 ( ( 7x - 3 ) + ( 4x + 17 ) )
358 = 2 ( ( 7x + 4x ) + ( -3 + 17 ) )
358 = 2 ( 11x + 14 )
358 = 22x + 28
22x + 28 = 358
22x = 358 - 28
22x = 330
x = 330/22
x = 15 Meter
Panjang
7x - 3
7 ( 15 ) - 3
105 - 3
102 meter
Lebar
4x + 17
4 ( 15 ) + 17
60 + 17
77 meter
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