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1 vote
Can someone please answer. There is one problem. Thank you!

Can someone please answer. There is one problem. Thank you!-example-1
User Purus
by
7.7k points

1 Answer

3 votes
Hello,

if we use Heron's formula:

p=(7.2+5.9+11.2)/2=12.15

Area=√(p*(p-a)(p-b)(p-c))
=√(12.15*(12.15-7.2)(12.15-5.9)(12.15-11.2))
=√357,09609375
=18,896986366878714557972599553433≈18.90

So i suppose Answer=D (with an error of 0.01)


User Andy Shephard
by
8.1k points

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