The wall of a house has a total height of 21 m and depth of 4 m. Height of the wall above the surface is m.

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Solution

The correct option is B $17$
Total height = $21$ m

Wall depth below surface= $4$ m

Height of wall above the surface $= 21 - 4 = 17$ m.

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The wall of a house has a total height of 21 m and depth of 4 m. Height of the wall above the surface is m.

The correct option is B 17Total height =21 m Wall depth below surface=4 m Height of wall above the surface =21−4=17 m.

The correct option is B $17$
Total height = $21$ m

Wall depth below surface= $4$ m

Height of wall above the surface $= 21 - 4 = 17$ m.