Question

The length of a rectangular field is twice its breadth. If the area of the field is 288 sq.m., the length of the field is:

• A. 14 m
• B. 12 m
• C. 24 m
• D. 16 m

Answer 1

Answer:

C. 24 m

Solution:

Given:

The length of a rectangular field is twice its breadth.

The area of the field is 288 sq.m.

Concept used:

Area of a rectangle = Length × Breadth

Calculation:

Let the length and breadth of the rectangular field be 2d and d meter respectively.

According to the concept,

2d × d = 288

⇒ 2d² = 288

⇒ d² = 144

⇒ d = ± 12

⇒ d = +12 (length can't be negative)

⇒ 2d = 24

∴ The length of the field is 24 meter.