Jawaban:
*Cara pengerjaan dan jawaban tertera pada gambar yang terlampir dibawah ini yaa :)
a.
i. x = √5²+5²
= √25 + 25
= √50
= 5√2
ii. x =√15²+8²
=√225+64
=√289
= 17 cm
iii. *5√2 = √50
x² = (√50)² + (√50)²
= √2500 + √2500
= 50 + 50
= 100
x = √100 = 10 cm
iv. x = √10²+5²
= √100+25
= √125
= 5√5
b. p : l = 7 : 4
Kell = 88 cm
Kell = 2(p+l)
= 2(7+4)
= 22 cm (rasio)
Rasio = 22 : 88
= 1 : 4
L = p . l
= (7×4)(4×4)
= 28 . 16
= 448 cm²
c. Kell = 4s
72 = 4s
s = 72/4
= 18 cm
L = s²
= 18² = 324 cm²
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Jawaban:
*Cara pengerjaan dan jawaban tertera pada gambar yang terlampir dibawah ini yaa :)
a.
i. x = √5²+5²
= √25 + 25
= √50
= 5√2
ii. x =√15²+8²
=√225+64
=√289
= 17 cm
iii. *5√2 = √50
x² = (√50)² + (√50)²
= √2500 + √2500
= 50 + 50
= 100
x = √100 = 10 cm
iv. x = √10²+5²
= √100+25
= √125
= 5√5
b. p : l = 7 : 4
Kell = 88 cm
Kell = 2(p+l)
= 2(7+4)
= 22 cm (rasio)
Rasio = 22 : 88
= 1 : 4
L = p . l
= (7×4)(4×4)
= 28 . 16
= 448 cm²
c. Kell = 4s
72 = 4s
s = 72/4
= 18 cm
L = s²
= 18² = 324 cm²