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The sides of a triangle are in the ratio 3:5:7 and its perimeter is 120cm.find its area |
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Answer» Answer: perimeter = SUM of all 3 sides = 3x + 5x + 7x = 15x so, 15x.= 120 x = 120 ÷ 15 = 8 so, 3x = 3×8 = 24cm 5x = 5×8 = 40cm 7x = 7×8 = 56cm umm.. i don't know if it's a right.angled TRIANGLE or isosceles triangle, so I guess I'll have to find it URSELF, SORRY. |
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