A giant pie is created in an attempt to break a world record for baking. The pie is shown below: A circle is shown with a central angle marked 45 degrees and the diameter marked 15 feet.

a. 22.08

Step-by-step explanation:

d = diameter = 15ft; r = (1/2)d = 7.5ft; A=area

So, A = (π) ×

A = (π) ×

A = (π) ×

The entire circle is 360°, so 45 is .

A(slice) = × π

A(slice) = 7.03 × (π) ×

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step-by-step explanation:

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: