The student is off by a power of 10
The answer is 3 x 10^12
Answer:x=15
Step-by-step explanation:
Answer:
Diameter = 14 cm
Radius(r) = Diameter/2
=> 14/2 = 7cm
Circumference of circle
=> 2 π r
=> 2 × \frac{22}{7}
7
22
× 7
=> 2 × 22
=> 44 cm
Therefore, circumference of circle= 44 cm.
___________________
Area of circle = π r ²
=> \frac{22}{7}
7
22
× 7 × 7
=> 22 × 7
=> 154 cm²
Therefore, Area of circle = 154 cm²
Answer:
Step-by-step explanation:
Let us represent:
Short pieces = x
Middle pieces = y
Long pieces = z
A three foot long deli sandwich must be split into three pieces
x + y + z = 3
The middle piece is twice as long as the shortest piece
y = 2x
The shortest piece is 8 inches shorter than the longest piece.
x = z - 8
z = x + 8
We substitute
x + y + z = 3
x + 2x + x + 8 = 3
5x = 8 - 3
5x = 5
x = 5/5
x = 1
y = 2x
y = 2 × 1
y = 2
z = x + 8
z = 1 + 8
z = 7
How long should the three pieces be?
