Radical word problems (ACT). Game on.

The speed, in meters per second, of a certain water wave can be estimated by multiplying the wavelength, in meters, by $12$ and then taking the square root of the product. According to this method, what is the estimated speed, in meters per second, of a wave with a wavelength of $45$ meters?

The sound intensity level, in a simplified unit, of a certain speaker can be estimated by multiplying the speaker's power, in watts, by $8$ and then taking the square root of the product. According to this method, what is the estimated intensity level of a speaker with a power of $75$ watts?

The impact speed, in feet per second, of an object dropped from a height can be estimated by multiplying the height, in feet, by $64$ and then taking the square root of the product. According to this method, what is the estimated impact speed, in feet per second, of an object dropped from a height of $12$ feet?

The diagonal length, in inches, of a certain square television screen can be estimated by multiplying the screen's area, in square inches, by $2$ and then taking the square root of the product. According to this method, what is the estimated diagonal length, in inches, of a screen with an area of $216$ square inches?

An estimate of escape speed, in kilometers per second, from a small asteroid can be found by multiplying the asteroid's radius, in kilometers, by $8$ and then taking the square root of the product. According to this method, what is the estimated escape speed, in kilometers per second, from an asteroid with a radius of $112$ kilometers?

The coverage distance, in feet, of a certain spray paint can be estimated by multiplying the number of ounces of paint by $48$ and then taking the square root of the product. According to this method, what is the estimated coverage distance, in feet, when $18$ ounces of paint are used?

The tension, in newtons, in a certain cable can be estimated by multiplying the length of the cable, in meters, by $28$ and then taking the square root of the product. According to this method, what is the estimated tension, in newtons, in a cable that is $45$ meters long?

The safe descent speed, in miles per hour, on a certain ramp can be estimated by multiplying the height of the ramp, in feet, by $50$ and then taking the square root of the product. According to this method, what is the estimated safe descent speed, in miles per hour, on a ramp that is $28$ feet high?