Question

Please tell me Question no 14. I hope you will tell me and I will understand.

Answer 1

${\huge{\bold{\red{YOUR\: SOLUTION}}}}$

$\underline\bold{Area \:of\:one\:box}$=2.

(30*20+20*20+20*30)= 3200cm^2.

so,, area of 250 boxes = 800000cm^2.

hence, cardboard used = 800000cm^2.

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Hope this helps u

Answer 2

Answer:

TSA of Cuboid(each box) = 2lw+2wh+2hl

TSA= 2×30×20 + 2×20×20 +2×20×30

TSA= 1200 + 800 +1200

TSA= 3200 sq cm

So amount of cardboard required for 250 box is 250× 3200=80000 sqcm.