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Please help me with this ​

Please help me with this ​-example-1

1 Answer

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Answer:

Explanation:

Open box is in rectangular shape. cuboid that is open in the top

l = length = 30 - (2.5 + 2.5 ) = 30 - 5 = 25 cm

h = 2.5 cm

w = width = 30 - (2.5 + 2.5) = 30 - 5 = 25 cm

Surface Area = 2lh + 2wh + lw

= 2*25*2.5 + 2* 25*2.5 + 25*25

=125 + 125 + 625

= 875 square cm

Volume = lwh

= 25*25*2.5

= 1562.5 cubic cm

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