Question

find the area of the circle round to the nearest tenth use 3.14 for pi do not include the units with your answer dammit or equals 15.6 cm

Answer 1

Given a circle with radius, r, the area, A, of the circle is given by

`\begin{gathered} A=\pi r^2 \\ \text{taking }\pi\approx3.14,\text{ we have} \\ A=3.14r^2 \end{gathered}`

Also,

`\text{the radius of a circle = }\frac{\text{ the diameter}}{2}`

Therefore,

then,

r = 7.8cm

Therefore,