please answer
I am waiting for 10 minutes only
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in Δle ABC → AC² = AB² + BC²
AC = √(21² + 28²)
AC = √1225 =35 cm
area of shaded = area of ( Δle ABC + semicircle) - area of sector
= {(1/2 × 28 × 21) + (1/2 × π × 17.5²)} - 90°/360° × π × 21²
= (294 + 481.25) - 346.5
= 775.25 - 346.25
= 428.75 cm²
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