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3 years ago

13

The longest side of a triangle is 80cm more than the second and 130cm more than the shortest side and its perimeter is 540cm. fi

nd its area
help help

1 answer:

Phoenix [80]3 years ago

5 0

Answer:

Area of triangle1/2b*h Now you can do

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3 years ago

Please help, thanks.

Svetllana [295]

$\text{Apply Pythagorean theorem,}\\ \\~~~~~~12^2 = 3^2 + h^2\\\\\implies h^2 = 12^2 -3^2\\\\\implies h^2 = 144-9\\\\\implies h^2 = 135\\\\\implies h = \sqrt{135}\\\\\implies h = 3\sqrt{15}\\\\\implies h \approx 11.62$

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2 years ago

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