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denis23 [38]
3 years ago
6

What is the cost of 2 kilograms of flour if 3 kilograms cost $4.86 and the unit price for each packages of flour is the same

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
8 0
The answer is: $3.24.

\frac{4.86}{3}  =  \frac{x}{2}
\frac{9 .72}{3}  =  \frac{3x}{3}
3.24 = x
so ye...
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Answer:

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Step-by-step explanation:

We are given the following dimensions of the triangular pyramid:

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a) To find Area of base of pyramid:

We know that it is a triangular pyramid and the base is a equilateral triangle. \text{Area of triangle = } \dfrac{1}{2} \times \text{Base} \times \text{Height} ..... (1)\\

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b) To find area of one lateral surface:

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Using equation (1) to find the area:

\Rightarrow \dfrac{1}{2} \times 8 \times 6\\\Rightarrow 24\ mm^{2}

c) To find the lateral surface area:

We know that there are 3 lateral surfaces with equal height and equal base.

Hence, their areas will also be same. So,

\text{Lateral Surface Area = }3 \times \text{ Area of one lateral surface}\\\Rightarrow 3 \times 24 = 72 mm^{2}

d) To find total surface area:

Total Surface area of the given triangular pyramid will be equal to <em>Lateral Surface Area + Area of base</em>

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b) Area of one lateral face = 24\ mm^{2}

c) Lateral Surface Area = 72\ mm^{2}

d) Total Surface Area = 87.6\ mm^{2}

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