Working alone, Amy can clean an attic in 17 hours. One day her friend Sumalee helped her and it only took 7.03 hours. How long would it take Sumalee to do it alone?

the reason why your question keeps getting deleted because this is not a school related question : )

i will answer your question though.

i never tried church's

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²

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: