Question

help please

Answer 1

thank you so much

Answer 2

i really need to finish my online class for the summer by 2morrow and i only have 17 questions left

Answer 3

for the first one, the sector is half a circle

Answer 4

do you remember the area of a circle?

Answer 5

@senpai_yerm

Answer 6

oh srry no

Answer 7

The area of a full circle, (or radius \(r\) and diameter \(d\)) is
\[A_\text{circle}=\pi r^2 = \pi\left(\frac d2\right)^2
\]

Answer 8

Our sector is not a full circle (360°), but only 180°

\[A_\text{sector}=\frac{180°}{360°}A_\text{circle }\\
\qquad=\frac12A_\text{circle}\\
\qquad=\tfrac12\pi r^2\\
\qquad=\tfrac12\pi\left(\frac d2\right)^2
\]

Answer 9

what do u think inkyvoyd