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4 years ago

I just need to know the answer as quick as possible!!!

Mathematics

2 answers:

liq [111]4 years ago

7 0

The answer would be 21.42cm as 6 + 3 + 3 = 12 and 2*3pi/2 = 3pi
3 pi = 9.42 and so 12 + 9.42 = 21.42 cm.

Dahasolnce [82]4 years ago

3 0

First since you know the radius:3 the perimeter of a full circle would be
2pi x 3 = 6 pi. But since it's only half it would be 3 pi.

6+3+3+3pi gets you 12+3 pi

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3 years ago

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$\large\bf{\underline{Given :}}$

An isosceles triangle ABC
AD is a bisector of ∠‎A

__________________________________________

$\large\bf{\underline{To \:prove :}}$

BD = DC

__________________________________________

$\large\bf{\underline{In \: triangle \: ABD\:and\: triangle\:ADC}}$

${⟹AD = AD\:\:\:\:\:\:\:\:\:\:\:\:\:\:( common)}$

${⟹∠BAD = ∠CAD\:\:\:\:\:\:\:\:\:( given : AD \:is \:bisector \:of \:∠A )}$

${⟹∠ABD = ∠ACD\:\:\:\:\:\:\:\:\:( given : angles\: in \:isosceles\: trianlge )}$

$\large\bf{\underline{Hence}}$

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$\large\bf{\underline{So}}$

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$\large\bf{\underline{Note :}}$ Slide to view full answer.

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