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Find the inner surface area of all walls...

Find the inner surface area of all walls of a rectangular room with length 7 m breadth 5 m and height 3.5 m
एक आयताकार कमरे की सभी दीवारों का आतंरिक पृष्ठ क्षेत्रफल ज्ञात करें जिसकी लंबाई 7 मी. चौड़ाई 5 मी और ऊंचाई 3.5 मी है |

A

`84 m^2`

B

`168 m^2`

C

`126 m^2`

D

`42 m^2`

Text Solution

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