Question

help me. guys I will make u r answer brainlist​

Answer 1

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Answer 2

Answer:

238 cm sq

Step-by-step explanation:

first find out inner volume

formula is (length x breadth x height)

= (5 x 4 x 7)

= 140 cm sq

then find out outer volume

outer length = 1+5+1 = 7

outer breath = 1+4+1 = 6

outer height = 1+7+1 = 9

formula = (length x breath x height)

= 7x6x9

= 387 cm sq

* we add 1 two times because the thickness had to be counted once on the right and once on the left

volume of wood used =

outer volume - inner volume

= 378-140

= 238 cm sq