Answer
$h=3.5~\text{ft}$
Work Step by Step
Volume of square pyramid:
$$V=\frac13 Bh$$
Substitute $V=35$ and $B=30$ to find $h$:
$$35=\frac13\cdot 30\cdot h$$
$$35=10h$$
$$h=35:10=3.5~\text{ft}$$
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 1 - Solving Linear Equations - 1.1 - Solving Simple Equations - Exercises - Page 10: 56
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