Question

soalnya di gambar,tolong bantu dijodohkan agar tidak jomblo​

Answer 1

Luas DCGH = p x l = 1`2 x 9 = 108 cm^2.

Luas ADHE = p x l = 5 x 9 = 45 cm^2.

Luas EFGH = p x l = 12 x 5 = 60 cm^2.

Pythagoras.

Cari alas ACGE.

Alas diagonal ruang = Sisi miring diagonal sisi.

c^2 = a^2 + b^2

c^2 = 12^2 + 5^2

c^2 = 144 + 25

c^2 = 169

√c^2 = √169

c = 13.

Alas diagonal ruang = 13.

Tinggi diagonal ruang = 9.

Maka,

Luas ACGE = 13 x 9 = 117 cm^2.

BE = c

c^2 = a^2 + b^2

c^2 = 144 + 81

c^2 = 225

√c^2 = √225

c = 15 cm.

Maka,

Luas BCHE = 5 x 15 = 75 cm^2.

Answer 2

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