Answer:
10π inches
Step-by-step explanation:
C = 2πr
C = 2π(5)
C = 10π ≈ 31.42
Answer:120meters
Step-by-step explanation:
Answer:
60km
Step-by-step explanation:
There are two ways to look at this
1. Finding the unit rate
We can find how many km he travels in 1 hour by diving both the hours and km by 2. 1 hour = 10km so 6 hours is 60km since we multiply by 6.
2. Multiply by 3
We can multiply both the km and hours by 3, since 2x3=6 hours
20km * 3 hours = 60km
Answer:
5 cm
Step-by-step explanation:
Perimeter of a semicircle is :
P = πr + 2r
P = r(π + 2)
25.71 = r(3.14 + 2)
25.71 = r(5.14)
Divide both sides by 5.14
25.71 / 5.14 = r(5.14) / 5.14
5.0019455 = r
Hence, radius of semicircle = 5 cm
The given expression 2^8 * 8^2 * 4^-4 can be written in the exponential form 2^n as 2^6.
<h3>What are exponential forms?</h3>
The exponential form is a more convenient way to write repetitive multiplication of the same integer by using the base and its exponents.
<u>For example:</u>
If we have a*a*a*a, it can be written in exponential form as:
=a^4
where
- a is the base, and
- 4 is the power.
The power in this format reflects the number of times we multiply the base by itself. The exponent is also known as the index or power.
From the information given:
We can write 2^8 * 8^2 * 4^-4 in form of 2^n as follows:




Therefore, we can conclude that by using the exponential form, the given expression 2^8 * 8^2 * 4^-4 in the form 2^n is 2^6.
Learn more about exponential forms here:
brainly.com/question/8844911
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