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kunal

· started a discussion

· 1 Months ago

figure (Question: 286880.0 )

pls explain figure of this question

Question:

A square piece of paper is folder three times along its diagonal to get an isosceles triangle whose equal sides are 15 cm. What is the area of the unfolded original piece of paper ?

Options:
A)

8100 sq. cm

B)

3600 sq. cm

C)

900 sq. cm

D)

2500 sq. cm

Solution:

Ans: (c)

After open its folding side of square = 30

Then area = (30)2 = 900 sq cm

Knowledge Expert

· commented

· 1 Months ago

Dear Student,

It is very simple take a square shape paper and start to turn by their diagonal and again folded according to question repeated for three times it forms a isosceles triangle which two sides are equal mark it. then again open turn for square shape we found 15 cm sides are twice and its dimension is 30. for sides of square is 30 cm area is 30*30= 900 cm^2.

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