A rectangular field is of 25 m long and 21 m wide. A 2.5 m wide strip

1.	A rectangular field is of 25 m long and 21 m wide. A 2.5 m wide strip is levelled allaround it at the rate of 5 per square metre. Find the cost of levelling the strip.
Answer» Answer : The COST of leveling the STRIP is 1275 Given: A rectangular field is 25m LONG and 21 m wide 2.5m wide strip is leveled all around at the rate of 5m² To find : The cost of leveling the strip Solution : Given, Length is 25 and BREADTH is 21 Now Outer Rectangle : Length = 25 + 5 = 30 Breadth = 21 + 5 = 26 Area of Outer Rectangle = 30 × 26 = 720m² Now inner Rectangle : Length = 25 Breadth = 21 Area of inner Rectangle = 25 × 21 = 525m² Area of strip = Area of Outer Rectangle - Area of inner Rectangle 720 - 525 = 255m² Now we have to find the cost of leveling the strip Given the rate of 5 PER square meter so , 255 × 5 = 1275 Hence , The cost of leveling the strip is 1275

A rectangular field is of 25 m long and 21 m wide. A 2.5 m wide strip is levelled allaround it at the rate of 5 per square metre. Find the cost of levelling the strip.

Answer»

Given,

Now Outer Rectangle :

Now inner Rectangle :

Area of strip = Area of Outer Rectangle - Area of inner Rectangle

Now we have to find the cost of leveling the strip

Given the rate of 5 PER square meter so ,

Hence , The cost of leveling the strip is 1275