side of two similar triangles are 3cm,and 5cm ,if what is the ratio of their areas
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Area of triangle with side 3cm = 1/2×base×height
=1/2×3×3
=1/2×9=4.5sq.cm
Area of triangle with side 5cm =
1/2×base×height
=1/2×5×5
=1/2×25
=12.5
Therefore,ratio between the 2 triangle's area =4.5/12.5
=9/25
=9:25
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Answered by
1
Answer:
1 : 1
Explanation:
Area of triangle = 1/2 × base × height
= 1/2 × 3cm × 5cm
= 15cm²/2
= 7.5cm²
If both triangle side is similar.so, their area also be similar.
Ratio = 7.5cm²/7.5cm²
= 1/1
= 1 : 1
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