(Please Hurry) Use 3. 14 as an approximation for it. Which is the area of a circle with a radius of 6 cm?
A. 18. 84 cm
B. 28. 26 cm2
C. 37.68 cm2
D. 113.04 cm2
E. about 355 cm2

Tσ fínd αrєα σf círclє

wє usє fσrmulα

αrєα σf círclє = π × ( r ) ²

suвstítutє thє vαluє

αrєα σf círclє = 3.14 ×( 6 cm × 6 cm)

multíplч thє vαluє

αrєα σf círclє = 113.04 cm

Hєncє, αrєα σf círclє ís 113.04 cm ².

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.