Question

10. The area of a square is 625 cm². Find the side and perimeter of the square.
11. The area of a rectangular grassy field is 756 cm². If its length is 36 cm, find its breadth.
Also find its perimeter.
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Answer 1

Answer:

side is undercube 625 is equal to 5 cm .

perimeter is square is 5 is 25 cm2

11. area =l*b

756=36*b

b= 756/36

b= 6cm

perimeter = 2*11

= 22cm2

Answer 2

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1. see below...

$area = {a}^{2} \\ {a}^{2} = 625 \\a = 25$

$side = 25cm \\ perimeter = 4 \times 25 \\ = 100 {cm}^{2}$

2. see below...

ᴛᴏᴛᴀʟ ᴀʀᴇᴀ = 756 ᴄᴍ2

ʟᴇɴɢᴛʜ = 36 ᴄᴍ

ʙʀᴇᴀᴛʜ = ?

ᴀʀᴇᴀ = ʟᴇɴɢᴛʜ × ʙʀᴇᴀᴛʜ

756 = 36 × ʙ

ʙ = 756 / 36

ʙ = 21 ᴄᴍ

ᴛʜᴇʀᴇғᴏʀᴇ ᴛʜᴇ ʙʀᴇᴀᴛʜ ɪs 21 ᴄᴍ...

ɴᴏᴡ ғɪɴᴅ ᴘᴇʀɪᴍᴇᴛᴇʀ...

ᴘᴇʀɪᴍᴇᴛᴇʀ = 2 × ( ʟ + ʙ )

= 2 × ( 36 + 21 )

= 2 × 57

= 114 ᴄᴍ

ᴛʜᴇʀᴇғᴏʀᴇ ᴛʜᴇ ᴘᴇʀɪᴍᴇᴛᴇʀ ɪs 114 ᴄᴍ...