A square water tank has its side equal to 40 m. There are four semi-circular grassy plots all round it. Find the cost of turfing the plot at Rs. 1.25 per square metre (Take π = 3.14).
Answers
Answer:
The cost of turfing 2512 m² of the plot is ₹ 3410.
Step-by-step explanation:
Given :
Side of a square water tank, a = 40 m
Diameter of a semicircular plot = side of a square
2r = a
r = a/2
r = 40/2
r = 20 m
Radius of a semicircle ,r = 20 m
Area of a semicircular plot , A= ½ πr²
A = ½ × 3.14 × 20²
A = 3.14 × 10 × 20
A = 3.14 × 200
A = 628 m²
Area of a semicircular plot = 628 m²
Total Area of a plot = 4 × area of semicircle
Total Area of a plot = 4 × 628= 2512 m²
Total Area of a plot = 2512 m²
Rate of turfing the plot = ₹ 1.25 per m² (Given)
Cost of turfing 1 m² of the plot = ₹ 1.25
Cost of turfing 2512 m² of the plot = ₹ 1.25 × 2512 = ₹ 3410
Hence, the cost of turfing 2512 m² of the plot is ₹ 3410.
HOPE THIS ANSWER WILL HELP YOU….
Here are more questions of the same chapter :
A rectangular piece is 20 m long and 15 m wide. From its four corners, quadrants of radii 3.5 m have been cut. Find the area of the remaining part.
https://brainly.in/question/9469383
Find the area of the circle in which a square of area 64 cm² is inscribed. [Use π = 3.14]
https://brainly.in/question/9469116
Answer:
do to you too to tip top you to tip to Ruthy Totoro you'll iyiou GL to tip to ykgkf