Drag and drop an answer to each box to correctly complete the derivation of a formula for the area of a sector of
Suppose a sector of a circle with radius r has a central angle of 0. Since a sector is a fraction of a full circle,
a sector's area A to the circle's area is equal to the ratio of the central angle to the measure of a
rotation of the circle. A full rotation of a circle is 27 radians. This proportion can be written as
Multiply both sides by ar2 and simplify to get
1, where
is the me
central angle of the sector and r is the radius of the circle.

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step-by-step explanation:

just copy and paste it.

visit this site for a tutorial ʖ-tutorial-flash-cards/

b. astronomers

the answer would be 484

step-by-step explanation:

just multiply 0.484 times 1,000 (formula)

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.