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allstar1255
26.01.2021 •
Mathematics
4
The diagram shows a concrete solid used in construction.
Find the volume of the solid.
Give your answer to 3 significant figures.
15 m
7 m
m
Solved
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Ответ:
Volume of figure = 289 m³
Step-by-step explanation:
Given figure is in the half cylindrical shape.
So calculate the volume of the whole cylinder first then half the volume.
Since, formula to calculate the volume of a cylinder is,
V = πr²h
Here, r = radius of the cylinder
h = height of the cylinder
Therefore, volume of a cylinder with 'r' =
m and h = 15 m will be,
V = π(3.5)²(15)
V = 577.268 m³
Half of the volume =![\frac{577.268}{2}](/tpl/images/1065/5130/1147b.png)
= 288.634 m³
≈ 289 m³
Therefore, volume of the figure shown in the picture = 289 m³
Ответ:
44
Step-by-step explanation:
Plug 8 in for x
6(8)-4= 44