498+345 is the answer but you divide the 3 for base of 9
Take a pic of an example and I will see if I can help you
Can anyone help me with my questions
The ratio of the sides of a 30 60 90 triangle are 1 : sq root (3) : 2
So the sides are
7.4
7.4 * sq root (3) =
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12.82
7.4 * 2 = 14.8
Perimeter = 7.4 + 12.82 + 14.8
</span></span></span><span><span>Perimeter </span>= 35.02
</span>
14.40%; 18/125= 0.144; 0.144×100= 14.40%
0.144×125= 18