in the given figure De is parallel to ab is equal to 7 cm CD is equal to 5 cm BC is equal to 18 cm find BC
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where is the figure
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Answer:
Step-by-step explanation:
It is given that ,
DE//AB
AD=7cm
CD=5cm
and BC=18cm
Using the basic proportionproportionality theorem,
We have,
= CD/CA=DE/AB=CE/CB
= CD/CA=CE/CB
= 5/12=CE/18
= 18×5=12CE
= 12CE = 90
= CE = 90/12
= CE =7.5 cm
Since CE = 7.5cm
therefore CB = CE+BE
= 18= 7.5+BE
= BE =18-7.5
= BE = 10.5
therefore BE = 10.5 and CE = 7.5
Hope you understand
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