An oval shaped meeting table made of wood has dimensions of its top as shown in the figure find the cost of the polishing it @ rupees 5.75 per square metre used by 3.14
Answers
The total cost of polishing the table is 507.49 Rs
Step-by-step explanation:
Area of the oval shaped table = Area of the rectangle + area of the semicircle
= l x b + 2 x πr^2/2
= 10 x 6 + 3.14 x 3 x 3
= 60 + 3.14 x 9
= 60 + 28.26 = 88.26 m^2
Cost of polishing per metre = 5.75 / m^2
Total cost = 5.75 x 88.26 = 507.49 Rs
Hence the total cost of polishing the table is 507.49 Rs
Also learn more
Find the cost of polishing the floor of square hall at rate of rs. 15 per meter sq., if each of the hall is 12.5 meter ?
https://brainly.in/question/8076228
Answer:
Area of rectangle = Length × Breadth
→ 10m × 6m = 60m
Area of 2 hemsiphere = 2× 1/2 πr²
radius = 6/2 m = 3m
πr² = 3.14 ×3² = 3.14 × 9 = 28.86m
Area of rectangle + area of 2hemisphere
=> 60+28.86 m² = 88.26m²
Therefore , cost of polishing
=> Rs. 5.75 × 88.26 = Rs.507.49