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A square sheet has a diagonal of 14 cm folded across it.
What is the area of the square sheet?

Class 7Pythagoras PropertyTriangles

A98
B88
C108
D196

Step-by-Step Solution

If side =

s

, diagonal

d

satisfies

d^{2} = s^{2} + s^{2} = 2 s^{2}

, so

s^{2} = \frac{d ^{2}}{2} = \frac{196}{2} = 98

. Area =

s^{2} = 98

sq cm.

Answer: A) 98

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