bittner09 bittner09

26-07-2022
Mathematics

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Given AB=10cm, CD=11cm, and AD=39cm, find the length of BC

Given AB10cm CD11cm and AD39cm find the length of BC class=

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saadatk saadatk

26-07-2022

Answer:

BC = 18 cm

Step-by-step explanation:

As we can see from the diagram:

AB + BC + CD = AD

⇒ 10 cm + BC + 11 cm = 39 cm

⇒ BC + 21 cm = 39 cm

⇒ BC = 39 cm - 21 cm

⇒ BC = 18 cm

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