#### Answer

$1240$

#### Work Step by Step

$\sum ^{15}_{i=1}i^{2}=\dfrac {n\left( n+1\right) \left( 2n+1\right) }{6}=\dfrac {15\times \left( 15+1\right) \times \left( 2\times 15+1\right) }{6}=1240$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$1240$

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