You need to do $\displaystyle \pi \times 5^2 = \pi \times 5\times 5$
Which is different to $\displaystyle \pi^2 \times 5 = \pi \times \pi \times 5 \approx 3.14 \times 3.14 \times 5 $
and $\displaystyle \pi \times 2 \times 5 \approx 3.14 \times 2 \times 5 $
can you see the differences...?
You're only going to multiply by pi once since $\displaystyle A = \dfrac{\pi}{4} r^2$. Its the radius squared, not pi squared.
If I can assume that top shape is 1/4 circle than the area of that bit is $\displaystyle A = \dfrac{\pi}{4} 5^2 = \dfrac{25\pi}{4}$
The total area is the area of the rectangle + area of the quarter circle
Hi,
The top section is not defined so I would assume that the answer would be in terms of an unknown quantity If the top section has a lenght of X and the circular section is a quarter circle an equation can be written.One thing is obvious i.e. the area must be less than 55
bjh