Math, asked by fadheela, 1 year ago

The sides of a triangle are given as 11 cm,12 cm and 13 cm. Find the length of the altitude to the side 12 cm

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Answered by rekharr1424

120

First we need to fid its area bye Heron formula.

A=11cm B=12cm C=13cm

S=(A+B+C)/2

S=(11+12+13)/2

S=36/2=18

Area=√[(S(S-A)(S-B)(S-C)]

⇒√[(18(18-11)(18-12)(18-13)]

⇒√(18×7×6×5)

⇒√3780

⇒61.48 cm²

Now take 12cm as base.

Area=1/2×b×h

61.48=1/2×12×h

61.48=6h

61.48/6=h

10.24 cm=h

I hope it help you please mark me as BRAINLIEST......

rekharr1424: please mark me as brainliest.........

fadheela: The answer is 10.25

fadheela: Can u check it once more pls

rekharr1424: okk

rekharr1424: actually are is in point 61.481... so if we divide it by 6 then ans. is 10.2468.... u can see that 6 us more than 5 so for simplicity we can write it as 10.25.

rekharr1424: i hope you understand

rekharr1424: if yes plzzz mark me as BRAINLIEST.........

rekharr1424: thnk u for give heart means thnk

rekharr1424: now can you mark me as BRAINLIEST..

Answered by ankitsunny

Step-by-step explanation:

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