These are exponents. To solve an exponent you need to multiply the base it self how many times its says in the power.
a²
a = base
2 = power
7³ = 7 × 7 × 7 = 343
7³ = 343
Circumference is 62.8
To find the circumference, the formula is 2πr
The radius is half so we must multiply by 2 which is 20.
And finally, you multiply by π (3.14) and you will get 62.8 cm.
In conclusion, the answer is 62.8 cm.
So basically the question just wants you to add fractions so we set up the problem like this
1/2+1/5+1/8=weight of herbs=x (x signifies an unknown number)
so
we have to get the bottom numbers the same before we can add them so we
have to find the smallest number that they all can multiply into
so
2=2
5=5
8=2*2*2
so the smallest number that that will go into all three of the numbers is
2*2*2*5 =40
so the bottom number will be 40
so 1/2 is equal to 20/40
1/5=8/40
1/8=5/40
so 20/40+8/40+5/40=33/40
answer is 33/40 grams
so
