Question

The perimeter of a rectangle
is 42 inches. If the width is 8
inches. What is the length?​

Answer 1

Answer:

length = 13 inches.

Step-by-step explanation:

What is the perimeter? Perimeter is the sum of the sides of a polygon. Here, the perimeter is given as 42 inches and width as 8 inches. We know that the perimeter of a rectangle is 2(l + b).

The equation can be formed as:-

→ 2(l +b) = perimeter

→ 2(l + 8) = 42

→ 2l + 16 = 42

→ 2l = 42 - 16

→ 2l = 26

→ l = 26/2

→ l = 13 inches

Answer 2

ɢɪᴠᴇɴ:

• The perimeter of a rectangle
• is 42 inches. If the width is 8
• inches.

ᴛᴏ ꜰɪɴᴅ:

• Length of the rectangle

ꜰᴏʀᴍᴜʟᴀ ᴏꜰ ᴩᴇʀɪᴍᴇᴛᴇʀ:

• $\tt\bf\green{A = 2 (L+B)}$

ꜱᴏʟᴜᴛɪᴏɴ:

[Let length be 'L']

ATQ,

42 inches ⟶ 2 × (8 + L)

$\rightarrow$ $\frac{42}{2} = (8 + L)$

$\rightarrow$ 21 = 8 + L

$\rightarrow$ L = 21 - 8

$\rightarrow$ L = 13

Hence, Length of the rectangle is equal to 13 inches.

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