Answer:
7) 
. 8)
Step-by-step explanation:
7)
Here we have two different types of faces.Bottom face and side faces which are equivalent.
To calculate the area of a trinagle we have the formula of area to be
where a is the height of the triangle and b is the base of the triangle.
here let us first calculate the area of the bottom face,
now for the top faces which are similar, areas would be
Hence the total area is
8)
As we have seen in the above question area for a traingle would be
and for rectangle would be 
where l and b are the lengths and breaths of the rectangle.
Area of traingles would be ,
Area of rectangles would be,
Hence the total area is
That number would be 5.52
This is because 5 and 5/10 is the same as 5 and 1/2
5 and 1/5 in decimal form is 5.50
Then we will add 0.02
That will make the answer 5.52
Answer:
31/50
Step-by-step explanation:
Given: 0.62
Multiply by 100 to write as fraction: 62/100
Factor by 2: 31/50
Answer:
The number of passcodes possible is 1,100,000
Step-by-step explanation:
Here , we want to calculate the number of different possible passcodes.
For the five digit code,
each number in the code has a possibility of choosing from the digits 0 to 9, so this means that each of the numbers in the code has 10 options.
So for a five digit code, the number of possible choices would be 10 * 10 * 10 * 10 * 10 = 10^5
For a six digit code, the number of possible choice would be 10 * 10 * 10 * 10 * 10 * 10 * 10 = 10^6
So for 5 or 6 digits code, the number of possible choices would be;
10^5 + 10^6 = 10^5(1 + 10)
= 11(10^5) = 1,100,000
