Question

find the cost of cementing a square courtyard of perimeter 144 meters at the rate of @ 6.60 per square meter ​

Answer 1

Given:

• Perimeter of square i. e. 144 meters.
• Rate of cementing one square meter i. e. 6.6 rs per square meter.

To find:

• The cost of cementing the courtyard.

Solution:

(To find the cost of cementing, we need to find the area of the yard. For that, we need to find the length of the sides of the yard. )

perimeter of square = 4 × Side

Let side of square = s

➞144m = 4 × s

➞144m/4 = s

➞36m = s

length of side = 36m

area of square = s × s

➞Area = 36m × 36m

➞Area = 1296m²

Area of the courtyard = 1296m²

• Cost of cementing 1m² = Rs 6.6
• Cost of cementing 1296m² = 6.6 × 1296 = Rs 8,085.

Rs 8553.5 is the answer

(approx 8554 )