1.

two adjacent sides of a parallelogram are 10 cm and 12cm .if its one digonal is 14 cm long fond the area of 5he parallelogram.​

Answer»

-STEP EXPLANATION:AREA of PARALLELOGRAM ABCD=2×area△BCDNow, in △BCDS=212+10+4=18cmar△BCD=s(s−a)(s−b)(s−c)=18(18−12)(18−10)(18−14)                    =18×6×8×4=3×6×6×2×4×4                    =4×66=24root6cm2∴ area of parallelogramABCD=2×246=48root6cm2



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