A drink coaster in the shape of a circle has
1 answer:
The diameter of the coaster is 5 cm.
Step-by-step explanation:
Given,
The area of the circle = 19.63 sq inch
To find the diameter, we need to find the radius
Formula
The area of a circle with radius(r) = π sq cm
According to the problem,
π = 19.63
or, =
= 6.2459
or, r = = 2.499 (approx)
= 2.5 cm
Hence the diameter of the circle = 2 × 2.5 cm = 5 cm
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Answer:
0.00007935
Step-by-step explanation:
7.935 x 10 to negative 5 power can be written as:
7.935 x 10^(-5)
A trick to finding 10 to the x power, x is the number of 0's. So 10^5 = 100000
When dividing by tens, move the decimal to the left by the amount of 0's
So our answer is 0.00007935