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BARSIC [14]
4 years ago
12

Two types of shipping boxes are shown below.

Mathematics
1 answer:
devlian [24]4 years ago
7 0

Answer:

B. 3 square feet

Step-by-step explanation:

The formula for surface area is:

2lw+2lh+2wh

Box F's surface area is just plugging in those variables

2(3)(3)+2(3)(3)+2(3)(3)=54

Box J's surface area is the same way

2(2)(4.5)+2(2)(3)+2(4.5)(3)=57

The difference is 57-54=3

The answer is B. 3 square ft

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6 0
3 years ago
In triangle ΔABC, ∠C is a right angle and CD is the height to
Zina [86]

Answer:

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Step-by-step explanation:

The triangles are drawn below.

CD is perpendicular to AB as CD is height to AB.

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So, triangles ΔCBD and ΔCAD are right angled triangles.

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m\angle CDB=90\\m\angle CBD=90-\alpha\\m\angle BCD=\alpha\\\\m\angle CDA=90\\m\angle CAD=\alpha\\m\angle ACD=90-\alpha

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