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.
