Answer:
78.5714286 cm²
Step-by-step explanation:
The equation for the area of a circle is πr².
You can work out the radius (r) by halving the value of the diameter, which is given as 10cm.
You then square this, so 5² = 25.
Finally, multiply this by pi which is given to you as 22/7.
(22/7) x 25
3.14285714286 x 25 = 78.5714285714, to be exact.
No solution because 12x + 8 does not equal 12x + 12
It is given in the question that
Ben has a collection of 812 stamps. He gives his brother 345 stamps.
And we have to find how many stamps does Ben have left .
Let x stamps are left.
So we have

Subtracting 345 from both sides


Therefore after giving 345 stamps to his brother, 467 stamps are left .
<h3>
Answer: 75.36 square feet</h3>
Your teacher may want you to type the number only.
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Work Shown:
SA = surface area of a cylinder
SA = 2*pi*r^2 + 2*pi*r*h
SA = 2*3.14*2^2 + 2*3.14*2*4
SA = 75.36
The surface area is roughly 75.36 square feet.