Help! What is the total volume of the figure shown
2 answers:
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Half Tens is a way of multiplying where we have to find the value of given numbers. First we double any 'one' of the two given numbers and multiply both to get an answer. Then we divide that answer by '2' to get the answer.
Lets take two numbers as 16 and 340
Double the number 16
Now we will divide this by 2
So, if we check , it is 5440.
Similarly if we double the number 340, we get 680
Now,
And 10880/2 = 5440
Hence, in both ways the answer is 5440.
There are 5 pennies in a nickel, and 10 pennies in a dime. Now in $3.90 there are 390 pennies.
n = number of nickels in the pile
d = number of dimes in the pile
we know the pile has 55 coins, therefore whatever "n" and "d" are, we know that n + d = 55.
now, "n" is how many nickel coins are there, how many pennies is it in total? well, 5 pennies to a nickel, for "n" nickels, will then be 5(n) or 5n.
and "d" is how many dime coins are there, so therefore in "d" coins, there are 10(d) pennies, or 10d.
we also know the total amount of pennies is 390, therefore 5n + 10d = 390.
how many nickel coins are there anyway? well, n = 55 - d.
n = number of nickels in the pile
d = number of dimes in the pile
we know the pile has 55 coins, therefore whatever "n" and "d" are, we know that n + d = 55.
now, "n" is how many nickel coins are there, how many pennies is it in total? well, 5 pennies to a nickel, for "n" nickels, will then be 5(n) or 5n.
and "d" is how many dime coins are there, so therefore in "d" coins, there are 10(d) pennies, or 10d.
we also know the total amount of pennies is 390, therefore 5n + 10d = 390.
how many nickel coins are there anyway? well, n = 55 - d.