please solve the question 11
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Step-by-step explanation:
area is equal sum of all the area of the triangles
draw a line at the top to make a square and a right angled triangle
=1/2×4×8 + 8×8 + 1/2×(12-8)×8 + 1/2×12×8 + 1/2 ×20×8
=224 cm²
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