Question

Answer on paper pleese in typing its not understood and l know the answer just want explaiation the answer us cube , 63 cm²more...
Q5)b​

Answer 1

Answer:

TSA of cube of side 60 cm requires most cardboard to make

Step-by-step explanation:

in order to make these shapes we have to find their total surface area(TSA)

TSA of cuboid = 2(L*B+B*H+L*H)

TSA = 2( 70*50 + 50*60 + 70*60)

TSA = 2(10700)

TSA = 21400 $cm^2$

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TSA of cube = $6a^2$

TSA = 6*60*60

TSA = 21600 $cm^2$

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TSA of cylinder =

$2*\pi*r(r+h)\\2*\frac{22}{7} *3.5(3.5+7)\\=230.9 cm^2$

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TSA of cube = $6a^2$

TSA = 6*7*7

TSA = 294 $cm^2$

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