STEP 1: find height h
To find height h use Pythagorean Theorem:
h2+4a2=s2After substituting a=10cm and s=12cm we have:
h2+4(10cm)2=(12cm)2 h2+4100cm2=(12cm)2 h2+25cm2=(12cm)2 h2=144cm2−25cm2 h2=119cm2 h=119cm2h=119cm STEP 2: find volume V
To find volume V use formula:
V=3a2⋅hAfter substituting a=10cm and h=119cm we have:
V=3100cm2⋅119cmV=3100119cm3V=3100119cm3
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