transformers transformers

20-04-2015
Mathematics

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a trampoline has an area of 49pi square feet what's the diameter of the trampoline

Respuesta :

20-04-2015

Area of a circle is π*r²
sub what we're given
49π= πr²
49π= π*r²
r²= 49π/π
r²=49
r=7
The diameter is twice the radius therefore the diameter is 14 units

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