Question

4. The area of a rectangle is 1209 sq m. Its length measures 39 m. How much is its
perimeter?
{a) 122 m
(b) 134 m
(c) 148 m
(d) 140 m​

Answer 1

Answer:

$b) \: 140 \: m$

Answer 2

Question:-

The area of a rectangle is 1209 sq m. Its length measures 39 m. How much is its

perimeter?

(a) 122 m

(b) 134 m

(c) 148 m

(d) 140 m

Given:-

• Area (rectangle) = 1209m²
• Length = 39 m

ToFind:-

• Perimeter

Solution :-

→ Breadth = Area/Length

→ Breadth = 1209/39

→ Breadth = 31 m

⤖ Perimeter (rectangle) = 2(l + b)

⤖ Perimeter (rectangle) = 2(39 + 31)

⤖ Perimeter (rectangle) = 2 × 70

⤖ Perimeter (rectangle) = 140 m

• ✅ (D) 140 m