13.THE PERIMETERS OF TWO SIMILAR TRIANGLES TRIANGLE ABC AND TRIANGLE PQR ARE 35CM AND 49CM RESPECTIVELY.THE RATIO OF THE CORRESPONDING SIDES OF THE TRIANGLE IS______.
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Answer:
ratio of 35 and 49 is 5/7
so corresponding sides of the triangle are in the ratio 5/7
Step-by-step explanation:
ratio of perimeter of the triangle is equal to the ratio of corresponding sides
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The areas of two similar triangles are in the ratio of the squares of the corresponding altitudes.
Let first triangle altitude be x then second one's is x+10
so, Area of first triangle/area of second triangle=altitude of first triangle/altitude of second triangle
so, 49/64=(x/x+10)²
so, (7/8)²=(x/x+10)²
so, 7/8=x/x+10
so, 7(x+10)=8x
so, 7x+70=8x
so, 7x-8x=-70
so, x=70
So, first triangle's altitude is 70 cm
and the second one's is 80 cm
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