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13]

TA = √(20² - 12²)

TA = √(400 - 144)

TA = √(256)

TA = 16 cm → opsi A


14]

Gspl² = 26² - (16 - 6)²

Gspl² = 676 - 100

Gspl² = 576

Gspl = √576

Gspl = 24 cm → opsi D



15]

Gspd² = 25² - (9 + 6)²

Gspd² = 625 - 225

Gspd² = 400

Gspd = √400

Gspd = 20 cm → opsi B