Cross-section 5089

The brick pillar with a cross-section of 41x77 cm has a height of 3.25 m. Calculate:

(a) the volume of the pillar
b) the required number of bricks (if we need 400 pieces per 1 cubic meter)

Correct answer:

V =  1.026 m³
n =  411

Step-by-step explanation:

$$\begin{gathered} a=41/100=\frac{41}{100}=0.41\text{m} \\ b=77/100=\frac{77}{100}=0.77\text{m} \\ c=3.25\text{m} \\ V=a\cdot b\cdot c=0.41\cdot 0.77\cdot 3.25=1.026{\text{m}}^3 \end{gathered}$$

$n=\lceil V\cdot 400\rceil =\lceil 1.026\cdot 400\rceil =411$

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