A) 5 cm
B) 4cm
C) 10 cm
D) 20 cm
Correct Answer: B
Solution :
(b):- In \[\Delta OED\]. \[{{\left( OD \right)}^{2}}={{\left( DE \right)}^{2}}+{{\left( EO \right)}^{2}}\] \[\Rightarrow \]\[{{\left( 5 \right)}^{2}}={{\left( DE \right)}^{2}}+{{\left( 3 \right)}^{2}}\Rightarrow {{\left( DE \right)}^{2}}=25-9=16\] \[\therefore \]\[DE=4\] cmYou need to login to perform this action.
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