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plisss bantu kak/bang tentang lingkaran [2/2]jangan asal pake cara yaayang

Berikut ini adalah pertanyaan dari unknown pada mata pelajaran Matematika untuk jenjang Sekolah Dasar

Plisss bantu kak/bangtentang lingkaran [2/2]

jangan asal pake cara yaa




yang ga ngerti ga usah jawap​
plisss bantu kak/bang tentang lingkaran [2/2]jangan asal pake cara yaayang ga ngerti ga usah jawap​

Jawaban dan Penjelasan

Berikut ini adalah pilihan jawaban terbaik dari pertanyaan diatas.

\boxed{\bf \color{red}{Luas}}

Setengah lingkaran AB:

r = 21 cm

L = ½ × π × r² = ½ × 22/7 × 21 × 21

= ½ × 22 × 3 × 21

= 11 × 3 × 21

= 693 cm²

Setengah lingkaran BC:

r = 14 cm

L = ½ × π × r² = ½ × 22/7 × 14 × 14

= ½ × 22 × 2 × 14

= 22 × 14

= 308 cm²

Setengah lingkaran CD:

r = 7 cm

L = ½ × π × r² = ½ × 22/7 × 7 × 7

= ½ × 22 × 7

= 11 × 7

= 77 cm²

Total:

693 + 308 + 77 = \boxed{\bf \color{blue}{1.078~{cm}^{2}}}

\boxed{\bf \color{red}{Panjang~tali~AD}}

= AB + BC + CD

= 21 + 14 + 7

= \boxed{\bf \color{blue}{42~cm}}

Semoga membantu ya

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Semoga dengan pertanyaan yang sudah terjawab oleh IAblitz dapat membantu memudahkan mengerjakan soal, tugas dan PR sekolah kalian.

Apabila terdapat kesalahan dalam mengerjakan soal, silahkan koreksi jawaban dengan mengirimkan email ke yomemimo.com melalui halaman Contact

Last Update: Thu, 06 Jan 22
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