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Explain the significance of the little it's country for me |
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Answer» ANSWER Area of SHADED region=arΔABC−arΔDBC arΔABC= s(s−a)(s−b)(s−c)
s= a+b+c
= 2 122+22+120
=132m ∴arΔABC= 132(132−122)(132−22)(132−120)
= 132×10×110×12
= 11×12×10×10×11×12
=10×11×12=1320m 2
arΔBDC= s(s−a)(s−−b)(s−c)
s= 2 a+b+c
= 2 36+22+24
=36m ∴arΔBDC= 36(36−26)(36−22)(36−24)
= 36×10×14×12
= 12×3×2×5×2×7×12
=2×12
=24×10.24=245.76m 2
∴ area of shaded region=1320−245.76=1074.24m 2 ≈1074m 2 |
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