find the area of the shaded region.please fast
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S.No. ProportionProduct of extremes product of means (i) 1:2::4:81×8=8 2×4=8 (ii)5:6::75:90 5×90=450 6×75=450 (iii)3:4::24:323×32=96
4×24=96 (iv)2:5::x:15 2×15=30 5x=30 or x=5 (v)3:6::12:x 3×x or 3x=72⇒x=372=
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