give medal and fan if answered.
anything in GAEB
does it include the triangle, or just the portion of the circle?
i dont see enough information to determine the area of the triangle for those parts.
hmm, might be tho ... lets draw it out maybe
i cant say that i see a way to determine the length of the base from this.
or trig it
is there any possible guess
not for the triangle ... the terminology 'sector' implies the circle area to me tho
well then what is the circle area
you would need to find the formula in your material for the area of a circle ... then we can progress
for a circle
and we know r right?
A.20pi B.100pi C.2pi D.72pi the answer has to one of these
... we know r right? what does the r stand for?
then our area of the full circle is? 10^2 pi but we only want 72 degrees of it .. not 360
10^2/360 gives us the area of 1 degree, and 72 degrees is just 72 * 10^2/360
being lazy and omitting the pi part of course
so is it 100π
100pi is the area of the whole circle ... we want 72 out of the 360 degrees that make up the whole
what is 100/360?
and we want 72 of them ... what do we get when we add .277777... 72 times?
72 * 100/360 9*8 * 10/36 8 * 10/4 2 * 10
so its 20π
thatll do it as long as sector is refering to the part of the circle