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brockandersin
31.03.2020 •
Mathematics
The base of a solid is the region between the curve yequals3 cosine x and the x-axis from xequals0 to x equals StartFraction pi Over 2 EndFraction . The cross sections perpendicular to the x-axis are squares with bases running from the x-axis to the curve. Find a formula for the area A(x) of the cross sections of the solid perpendicular to the x-axis.
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Ответ:
A=3(π/2)-1 au
Step-by-step explanation:
we have according to the graph that
f(x)=3
g(x)=cos(x)
Knowing A=∫|f(x)-g(x)|dx, then
A=(3x-sin(x)) evaluated 0 ≤ x ≤ π/2
A=(3(π/2)-sin(π/2))-(3.0-sin(0))
Ответ:
9514 1404 393
192 cm²
Step-by-step explanation:
The total surface area is the sum of the two triangular base areas and the three rectangular lateral face areas.
SA = 2(1/2)(6 cm)(8 cm) + (6 cm +8 cm +10 cm)(6 cm) = 192 cm²
The surface area of the figure is 192 square centimeters.