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In parallelogram A B C D ,A B=10c mdot T...

In parallelogram `A B C D ,A B=10c mdot` The altitudes corresponding to the sides `A B` and `A D` are respectively `7c m` and `8c mdot` Find `A Ddot`

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Given : ABCD is a parallelogram in which AB=10cm
Solution : Let altitudes be `A^'=7`cm and `A^''=8`cm
Now, using the formula of area of parallelogram
`1/2xxABxxA^'`=`1/2xxADxxA^''`
`10xx7`=`ADxx8`
`AD=8.75`
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