Jawaban:
90 cm
Penjelasan dengan langkah-langkah:
Sisi tegak segitiga = 25 × 25 = 625
= 24 × 24 = 576
= 625 - 576 = 49
= 49 : 7 = 7
R = d/2 = 7 : 2 = 3,5
Keliling 1/2 lingkaran :
= 1/2 × 2 × π × r
= 22/7 × 3,5 = 11 cm
Keliling seluruhnya :
= 11 cm + 39 cm + 25 cm + 15 cm
= 90 cm
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Jawaban:
90 cm
Penjelasan dengan langkah-langkah:
Sisi tegak segitiga = 25 × 25 = 625
= 24 × 24 = 576
= 625 - 576 = 49
= 49 : 7 = 7
R = d/2 = 7 : 2 = 3,5
Keliling 1/2 lingkaran :
= 1/2 × 2 × π × r
= 22/7 × 3,5 = 11 cm
Keliling seluruhnya :
= 11 cm + 39 cm + 25 cm + 15 cm
= 90 cm