Help with my work and step by step please

Mathematics

1 answer:

Dmitrij [34]3 years ago

7 0

Answer:

600cm^2

Step-by-step explanation:

20*20=400

20/2=10= h in 1/2bh

(1/2)10*20=100

square=400

triangle=100

total area=square+triangle+triangle

600cm^2

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