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Byju's Answer
Standard VII
Mathematics
Power Law
?2×122÷482=81
Question
(
?
)
2
×
(
12
)
2
÷
(
48
)
2
=
81
A
26
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B
32
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C
9
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D
15
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E
None of these
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Solution
The correct option is
E
None of these
H
e
r
e
,
(
?
)
2
×
(
12
)
62
÷
(
48
)
2
=
81
It can also be written as
(
?
)
2
×
(
12
48
)
2
=
81
⇒
(
?
)
2
=
81
×
16
⇒
?
=
√
81
×
16
⇒
=
9
×
4
=
36
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