Question

Explain the answer in steps.
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Answer 1

Answer:

60

Step-by-step explanation:

formula: height×½×base

= 15×8×½

=15×4

=60

Answer 2

Answer-60cm²

Step-by-step explanation:

A=√s(s-a)(s-b)(s-c)

=20(20-8)(20-17)(20-15)

=20*12*3*5

=4*5*3*4*3*5

=60cm²