Question

Concrete can be purchased by the cubic yard. How much will it cost to pour a circular slab 18 ft in diameter by 3 in. for a patio if the concrete costs $40.00 per cubic yard?

Answer 1

Answer: Thus cost of concrete to pour the circular slab is $ 94.25

Step-by-step explanation:

Given

Diameter of circular slab, d=18 ft

Thickness of slab , t= 3 inches = 0.25 ft

Rate of concrete , R = $40.00 per cubic yard

Volume of the slab , $V=\frac{\pi d^{2}t}{4}=\frac{\pi \times 18^{2}\times 0.25}{4} ft^{3}=63.6 ft^{3}$

Now 1 cubic yard = 27 cubic feet

Therefore volume , $V=63.6 ft^{3}=\frac{63.6}{27}yard^{3}=2.356yard^{3}$

=> cost of concrete , $C=V\times R=\ 2.356\times 40=\ 94.25$

Thus cost of concrete to pour the circular slab is $ 94.25

Answer 2

280 dollars
Glad I could help