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25.) (kali tinggi segitiga 10 cm, sm sisi lain dr persegi panjangnya 15 cm. maaf gambar nggak jelas)
L per pan = 12 x 15 = 180 cm2
L seg = 2 x 1/2 x 6 x 10 = 60 cm2
L seluruhnya = 180 + 60 = 240 cm2 (B)