Triangle's 16613

They make bases for table lamps from bronze in the shape of an isosceles triangle. How many m2 are needed for 5 mats if the arms are 24 cm long and the height to the triangle's base is 1.5 dm?

Correct answer:

S =  0.1405 m2

Step-by-step explanation:

n=5 r=24 cm m=24:100  m=0.24 m h=1.5 dm m=1.5:10  m=0.15 m  (a/2)2=r2h2=25622032=0.0351 a=2 r2h2=2 0.2420.1520.3747 m  S1=2a h=20.3747 0.150.0281 m2  S=n S1=5 0.0281=0.1405 m2

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Tips for related online calculators
See also our right triangle calculator.
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Calculation of an isosceles triangle.
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