Question

2. Find the perimeter and area of the rectangle of length 5 cm and breadth 70 mm

Answer 1

Step-by-step explanation:

p = 2(l+b)

= 2 (5+70)

= 2x 75

= 150 Answer

A = lxb

= 70x5

= 350 Answer

Answer 2

Step-by-step explanation:

ᴀs ᴡᴇ ᴋɴᴏᴡ:-

ᴀʀ(ʀᴇᴄᴛᴀɴɢʟᴇ) = ʟ × ʙ

$5cm \: = 5 \times 10 \\ 5cm \: = 50mm$

$area = l \times b \\ = 50 \times 70 \\ = 3500 {mm}^{2} \\ i.e. \\ 35 {cm}^{2}$

ᴀʟsᴏ, ᴘᴇʀɪᴍᴇᴛᴇʀ ᴏғ ʀᴇᴄᴛᴀɴɢʟᴇ = 2(ʟ+ʙ)

$p = 2(l + b) \\ p = 2(50 + 70) \\ = 2(120) \\ 240mm \\ i.e. \\ 24cm$