A) \[364\,\,\text{c}{{\text{m}}^{2}}\]
B) \[374\,\,\text{c}{{\text{m}}^{2}}\]
C) \[384\,\,\text{c}{{\text{m}}^{2}}\]
D) \[394\,\,\text{c}{{\text{m}}^{2}}\]
Correct Answer: C
Solution :
Let the other diagonal be 2x. So, in \[\Delta AOB,\]\[{{(20)}^{2}}={{(12)}^{2}}+{{x}^{2}}\] \[\Rightarrow \]\[{{x}^{2}}=400-144\]You need to login to perform this action.
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