Answer:
Step-by-step explanation:
The area of a triangle is half the product of its base and height.
A = 1/2bh
<h3>a)</h3>
A = 1/2(2.3 in)(8.9 in) = 10.235 in²
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<h3>b)</h3>
A = 1/2(15 cm)(30 cm) = 225 cm²
It would help if you showed a picture of the number line
