Question

| 37. एक वर्ग की भुजा 10 cm है । यदि वर्ग की भुजा
दुगनी कर दी जाए तो नया परिमाप कितने गुणा हो
जाएगा ?
(1)
समान रहेगा।
(2)
4 गुणा
(3) 3गुणा
(4)
2 गुणा​

Answer 1

यदि वर्ग की भुजा दुगनी कर दी जाए तो नया परिमाप 2 गुणा हो जाएगा।

Step-by-step explanation:

Case 1.

Length of a side of the square = 10 cm

Then perimeter of the square is

P₁ = 4 × 10 cm = 40 cm

Case 2.

Now the length of a side of the square is doubled.

∴ the length of a side of the square = 20 cm

Then the perimeter of the square is

P₂ = 4 × 20 cm = 80 cm

Now P₂/P₁ = 80/40 = 2

i.e., P₂ = 2 P₁

∴ the perimeter will be doubled when the length of a side is doubled.

So OPTION (4) is correct.