Prism

Calculate the height of the prism having a surface area 448.88 dm² wherein the base is square with a side of 6.2 dm. What will be its volume in hectoliters?

Correct result:

c =  15 dm
V =  5.766 hl

Solution:

S=448.88 a=6.2 S1=a2=6.22=96125=38.44 S=2 S1+4a c c=(S2 S1)/(4 a)=(448.882 38.44)/(4 6.2)=15 dmS=448.88 \ \\ a=6.2 \ \\ S_{1}=a^2=6.2^2=\dfrac{ 961 }{ 25 }=38.44 \ \\ S=2 \cdot \ S_{1}+4a \cdot \ c \ \\ c=(S-2 \cdot \ S_{1})/(4 \cdot \ a)=(448.88-2 \cdot \ 38.44)/(4 \cdot \ 6.2)=15 \ \text{dm}
V1=S1 c=38.44 15=28835=576.6 V=V1/100=576.6/100=2883500=5.766 hlV_{1}=S_{1} \cdot \ c=38.44 \cdot \ 15=\dfrac{ 2883 }{ 5 }=576.6 \ \\ V=V_{1}/100=576.6/100=\dfrac{ 2883 }{ 500 }=5.766 \ \text{hl}



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