Pls guys answer my this question
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Answer:
The total surface area of the given figure is=74m.
Step-by-step explanation:
Surface area of the top rectangle.
Area of rectangle= l×b=(7*3) m =21m.
Area of 2 triangle= 1/2*h*base=(1/2*3*6)*2m=18m
{I found the height by "heron"'s formula and took the 3m as base because there was a 90° sign beside it)
Area of bottom rectangle= l×b=(7*5)m=35m
Therefore, the total surface area is (21+18+35)m
=74m.
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