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Help please with surface area

I know the answer I just need help showing my work
Picture below please help

Help please with surface area I know the answer I just need help showing my work Picture-example-1
User Mculp
by
6.8k points

1 Answer

2 votes

Answer:

Triangle Area = 1/2bh

Rectangle area =bh

Explanation:

Triangle Area

10x9=90 (normally you would divide by 2 here, but since there are two triangles the total area would be 90)

Rectangle area (bottom)

10x10=100

Rectagle are (top)

13.5x10 = 135

Add up all values = 325 in squared

User Ljuba
by
6.8k points