Diagonalnya 40√2cm (dari phythagoras)
d=40√2cm
a=20√2cm
b=10√2cm
Luas oval
L=π×a×b
L=3,14×20√2×10√2
L=3,14×400
L=1,256cm²(d.)
Semoga bermanfaat
..
[tex]L=Luas~Persegi-2(Luas~Persegi-\frac{1}{4}Lingkaran)[/tex]
[tex]~~~~= (40 \times 40) - 2(40 {}^{2} - ( \frac{1}{4} \times 3.14 \times 40 {}^{2} ))[/tex]
[tex]~~~~=1600 - 2(1600 - 1256)[/tex]
[tex]~~~~=1600 - 2(344)[/tex]
[tex]~~~~=1600 - 688[/tex]
[tex]~~~~= 912 \: cm {}^{2} \: \: \: \: \: opsi \: c[/tex]
[tex]\begin{array}{lr}\texttt{Selamat Menunaikan Ibadah Puasa}\end{array}[/tex]
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at | 23 - 03 - 2023}}[/tex]
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Penyelesaian
Diagonalnya 40√2cm (dari phythagoras)
d=40√2cm
a=20√2cm
b=10√2cm
Luas oval
L=π×a×b
L=3,14×20√2×10√2
L=3,14×400
L=1,256cm²(d.)
Semoga bermanfaat
Verified answer
Bangun Datar
[Persegi dan Lingkaran]
..
[tex]L=Luas~Persegi-2(Luas~Persegi-\frac{1}{4}Lingkaran)[/tex]
[tex]~~~~= (40 \times 40) - 2(40 {}^{2} - ( \frac{1}{4} \times 3.14 \times 40 {}^{2} ))[/tex]
[tex]~~~~=1600 - 2(1600 - 1256)[/tex]
[tex]~~~~=1600 - 2(344)[/tex]
[tex]~~~~=1600 - 688[/tex]
[tex]~~~~= 912 \: cm {}^{2} \: \: \: \: \: opsi \: c[/tex]
..
[tex]\begin{array}{lr}\texttt{Selamat Menunaikan Ibadah Puasa}\end{array}[/tex]
[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at | 23 - 03 - 2023}}[/tex]