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2 years ago

Please answer this. Thank you!

Mathematics

2 answers:

Nikitich [7]2 years ago

8 0

Answer:

8: 73.2 cm

10: 738 mm

Step-by-step explanation:

8: A= 12.2 (4.5 + 7.5) / 2 --> 146.2 / 2 = 73.2 cm

10: A= 36 (22 + 19) / 2 --> 1,476 / 2 = 738 mm

denpristay [2]2 years ago

8 0

Answer:

8: 73.2

10: 738

Step-by-step explanation:

Area of a trapezoid = $A=\frac{a+b}{2} h$

where a and b = base lengths and h = height

For #8

These are the given dimensions

Base 1 = 4.5

Base 2 = 7.5

Height = 12.2

All we have to do is plug in the values into the formula

So....

$A=\frac{4.5+7.5}{2} 12.2\\4.5+7.5=12\\\frac{12}{2} =6\\6*12.2=73.2$

Hence the answer is 73.2cm²

For #10

Once again all we have to do is plug in the values into the formula

$A=\frac{22+19}{2} 36\\22+19=41\\\frac{41}{2} =20.5\\20.5*36=738$

Hence the answer is 738

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