K = K. persegi - K. 1/2 lingkaran
= 4s - πr
= 4(21) - 22/7 . 10,5
= 84 - 33
= 51 cm
L = L. persegi - L. 1/2 lingkaran
= s² - 1/2 πr²
= 21² - 1/2 . 22/7 . 10,5²
= 441 - 173,25
= 267,75 cm²
semoga membantu, maaf kalo salah
Jawaban:
K =84-33= 51
Penjelasan dengan langkah-langkah:
Kpersegi = 4×s
= 4×21 = 84
K½lingkaran = ½×π×d
= ½×22/7×21
= 33
K diarsir = 84-33=51
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K = K. persegi - K. 1/2 lingkaran
= 4s - πr
= 4(21) - 22/7 . 10,5
= 84 - 33
= 51 cm
L = L. persegi - L. 1/2 lingkaran
= s² - 1/2 πr²
= 21² - 1/2 . 22/7 . 10,5²
= 441 - 173,25
= 267,75 cm²
semoga membantu, maaf kalo salah
Jawaban:
K =84-33= 51
Penjelasan dengan langkah-langkah:
Kpersegi = 4×s
= 4×21 = 84
K½lingkaran = ½×π×d
= ½×22/7×21
= 33
K diarsir = 84-33=51