Question

The perimeter of rectangle is 20 cm. If the length of rectangle is 6 cm, then
its breadth will be
a.4 cm
b. 6 cm
c.10
d.14 cm
1​

Answer 1

ɢɪᴠᴇɴ :-

• Perimeter of Rectangle = 20 cm
• Length (l) = 6 cm

ᴛᴏ ғɪɴᴅ :-

• Breadth (b)

sᴏʟᴜᴛɪᴏɴ :-

We know that,

Perimeter of Rectangle = 2(length + breadth)

➮ 2(l + b) = 20

➮ (l + b) = 20/2

➮ 6 + b = 10

➮ b = 10 - 6

➮ b = 4

Hence,

• Breadth of rectangle is 4cm

therefore,

• Option (a) 4cm is correct option

Answer 2

✔ Given :-

• Perimeter Of Rectangle = 20 cm.

• Length Of Rectangle = 6 cm.

✔ To Find :-

• Breadth Of Rectangle.

✔ Solution :-

2(L + B) = 20cm.

Put the value Of Length.

➨ 2(6 + B) = 20cm.

➨ 12 + 2B = 20cm.

➨ 2B = 20 - 12.

➨ 2B = 8cm.

➨ B = 4cm.

Hence, Breadth = 4cm.