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2 years ago

11

Dan has put his coins into 2 stacks, Each stack has the same number of coins. There are 12 coins total, How many coins are in ea

ch stack?

2 answers:

Snezhnost [94]2 years ago

6 0

Answer:

6

Step-by-step explanation:

From question:

Dan has put his coins into 2 stacks

2 stacks in total

Each stack has the same number of coins

Number of coins in stack 1 = number of coins in stack 2

x = x

There are 12 coins total

Total number of coins in 2 stacks = 12

2x = 12

x = 6

There are six coins in one stack.

Usimov [2.4K]2 years ago

3 0

Answer: 6

Step-by-step explanation: Division use a calculator 12/2

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Step-by-step explanation:

We are given the following dimensions of the triangular pyramid:

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b) To find area of one lateral surface:

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Height = 8mm

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

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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