Question

answer the above two question

Answer 1

$\huge\boxed{Hlo}$

here is ur answer...

8.
let the dimension be 4x , 2x and x

TSA of cuboid = 2 ( lb + bh + hl )

2 ( 4x × 2x + 2x × x + x × 4x ) = 2800

2 ( 8x² + 2x² + 4x² ) = 2800

2 ( 14x² ) = 2800

28x² = 2800

x² = 2800 / 28

x² = 100

x = √100

x = 10

dimensionas = 4 × 10 = 40cm
2 × 10 = 20cm
1 × 10 = 10cm

40cm , 20cm and 10cm✔✔

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9.if rectangular sheet is folded to make cylinder then lunch will become height and breadth will become radius

volume of cylinder = πr²h

22 / 7 × ( 21 ) ² × 44

22 / 7 × 441 × 44

22 × 63 × 44

60984cm²✔✔

hope it helps....