The correct option is D None of these(?)^2 + (65)^2 (90)^2 7191 ⇒ (?)^2 = (160)^2 (90)^2 7191 ⇒ (?)^2 = 25600 (8100 + 7191 + 4225) ⇒ (?)^2 = 25600 ...

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Byju's Answer

Standard X

Mathematics

Geometric Progression

?2+652=1602-9...

Question

$(?)^{2} + (65)^{2} = (160)^{2} - (90)^{2} - 7191$

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Solution

The correct option is E None of these
$(?)^{2} + (65)^{2} - (90)^{2} - 7191$
$\Rightarrow (?)^{2} = (160)^{2} - (90)^{2} - 7191$
$\Rightarrow (?)^{2} = 25600 - (8100 + 7191 + 4225)$
$\Rightarrow (?)^{2} = 25600 - 19516$
$\Rightarrow (?)^{2} = 6084 \Rightarrow (?) = \sqrt{6084} = 78$

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(?)2+(65)2=(160)2−(90)2−7191

The correct option is E None of these(?)2+(65)2−(90)2−7191 ⇒(?)2=(160)2−(90)2−7191 ⇒(?)2=25600−(8100+7191+4225) ⇒(?)2=25600−19516 ⇒(?)2=6084⇒(?)=√6084=78

$(?)^{2} + (65)^{2} = (160)^{2} - (90)^{2} - 7191$

The correct option is E None of these
$(?)^{2} + (65)^{2} - (90)^{2} - 7191$
$\Rightarrow (?)^{2} = (160)^{2} - (90)^{2} - 7191$
$\Rightarrow (?)^{2} = 25600 - (8100 + 7191 + 4225)$
$\Rightarrow (?)^{2} = 25600 - 19516$
$\Rightarrow (?)^{2} = 6084 \Rightarrow (?) = \sqrt{6084} = 78$