Answer:
perimeter of triangle=20+20+24=64mm
height of triangle =16mm
length of rectangle=23mm
breadth of rectangle=24mm
we have
Total surface area=perimeter of triangle *length + 2*area of rectangle
=64*23+2*23*24=2576mm²
Surface area=2576mm²
1856
Step-by-step explanation
A = bh + 2ls + lb
Using the formula we get 1856
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-Chetan K
