Question

The base of a right angled triangle is 12 cm and its hypotenyse is 13 cm long .find its area and perimeter

Answer 1

Step-by-step explanation:

The other side of the triangle is (13 ^2-12^2)^.5=5thus area=1/2×base×height=1/2×12× 5=30cm^2and perimeter=12+13+5=30cm

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Answer 2

Answer:

we know in a right triangle, base^2 + height^2 = hypotenuse^2

so, 12^2 + h^2 = 13^2

144 + h^2 = 169

h^2 = 25

h  = root25

h = 5 cm

therefore, the height is 5cm

now, area = 1/2 bh = 1/2 x 12 x 5 = 30 cm^2

perimeter = 13+12+5 = 30 cm

Step-by-step explanation:

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