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Af =√ 20² - 12²
Af = √400 - 144
Af =√256
Af = 16
ed = √12² - 13²
ed=√144 - 169
ed=√25
ed = 5
ae = af-ad
ae = 16 - 10
ae= 6 cm
=
=
= √25
= 5 cm
DE = DF = 5 cm ------> EF = 10 cm
AF =
=
=
= √256 cm
= 16 cm
AE = AF - EF
= 16 cm - 10 cm
= 6 cm