Question

3. The area of a rectangular field is 300 m². If its breadth is 15 m find (i)
its length and (ii) its perimeter .​

Answer 1

(i) we know,

area of rectangle = l x b

300 = 15 x l

l = 300/15

l = 20 m

(ii) perimeter = 2 (l+b)

                     = 2 (20+15) = 2 (35)

                     = 70 m

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Answer 2

Answer:

• Its length = 20 m
• Its perimeter = 70 m

Step-by-step explanation:

Given that:

• The area of a rectangular field is 300 m².
• Its breadth is 15 m.

To Find:

• Its length.
• Its perimeter.

Formula used:

• Area of rectangle = (Length × Breadth)
• Perimeter of rectangle = 2(Length + Breadth)

Finding the length of rectangle:

Area of rectangle = (Length × Breadth)

→ 300 m² = (Length × 15 m)

→ Length = (300 m²)/(15 m)

→ Length = 20 m

Finding the perimeter of rectangle:

• Perimeter of rectangle = 2(Length + Breadth)
• Perimeter of rectangle = 2(20 m + 15 m)
• Perimeter of rectangle = 2(35 m)
• Perimeter of rectangle = 70 m