Preston has calculated that his drink coaster has an area of 78.5 square centimeters.What is the coaster’s radius? Use 3.14 for
1 answer:
Answer:
The coaster’s radius is 5 cm
Step-by-step explanation:
Drink Coaster has a circular shape.
Area of a circle = π*r²
so, area of the drink coaster = π x (Radius of the drink coaster)²
Given that Area of the drink coaster is 78.5 cm²
∴ 78.5 cm² = π*r²
Also we are to use 3.14 for π
∴ 78.5 cm² = 3.14*r²
r² = 78.5 cm² / 3.14
r² = 25 cm²
r = cm
r = 5 cm
Hence, the coaster’s radius is 5 cm
You might be interested in
The pythagorean theorem states that a^2+b^2=c^2.
3^2 is 9.
9+9=18
The square root of 18 is approximately 4.24.
a.
b.
c.4.24
3^2 is 9.
9+9=18
The square root of 18 is approximately 4.24.
a.
b.
c.4.24
Answer and Step-by-step explanation:
If the radius is 5, then we can plug 5 into the area of a circle equation.
A =
A =
A = 25
<u>The area of a circle with radius 5 is 25</u><u>.</u>
<em><u>#teamtrees #PAW (Plant And Water)</u></em>