Math, asked by sushmita24, 1 year ago

Answer this question fast....

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Answered by Anonymous

Step-by-step explanation:

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$total \: distance \: travelled = 60 + 80 = 140km \\ total \: time \: taken = 1 \: h + 1h = 2h \\ average \: speed = \frac{total \: distance}{time \: taken} \\ = \frac{140}{2} \\ = 70km \: per \: hour$

Answered by nisha382

Answer:

${\huge{\red{\underline{\bold{Answer}}}}}$

Given,side of the board=a

•°•a+a+a=180°

=>3a=180°

=>a=60°

•°•S=a+a+a/2

=3a/2

=180/2

=90

now,area of the board=√S(S-A)(S-B)(S-C)

=√90(90-60)

(90-60)(90-60)

=√90.30.30.30

=30.30√2

=900√2cm

•°•area of the board is 900√2cm

Step-by-step explanation:

Thanks ❤️

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