Q3. A 5 m wide lawn is cultivated all along the outside of a rectangular plot measuring 60m x30m.
The total area of the lawn is.
Answers
≡QUESTION≡
A 5 m wide lawn is cultivated all along the outside of a rectangular plot measuring 60m x30m. What is the total area of the lawn?
║⊕ANSWER⊕║
Area of the lawn = Area of outer rectangle - Area of inner rectangle. --- (1)
Measure of outer rectangle = length = 60 + 5 + 5 = 70m
=Width = 30 + 5 + 5 = 40m
Area of outer rectangle = length * width
= 70 * 40
= 2800 m² --- (2)
Area of inner rectangle is given directly = 60 * 30
= 1800 m² -- (3)
Substitute (2) and (3) in (1), we get
Area of lawn = 2800 - 1800
= 1000 m²
∴Area of the lawn is 1000 m²