One question for a medal

Question

anonymous · Answer

attachment

mrnood · Answer

you are told that it is ONE QUARTER of a circle
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What is the formula for the area of the WHOLE circle?

anonymous · Answer

A=1/4 pi radius squared

mrnood · Answer

well - that is the area of the QUARTER as required

so radius = 5 

just put that into your equation to get the answer (remember to round to nearest tenth like the question asks...)

anonymous · Answer

how would i write that in a sentence

mrnood · Answer

It asks you to write the formula (which you already did)

now use the formula to work out the area

anonymous · Answer

ok

anonymous · Answer

thanks

mrnood · Answer

I suppose the first part could be

" find the area of the whole circle that hass the same radius as the quadrant, using A= pi r ^2 , then divide it by 4"

anonymous · Answer

ok i already wrote my answer thank you