You would use the bottom right box :)
C. Jasmine bought some tiles to put around her patio. . .
They asked for area which is always L x W, which was the give away.
240,000 is a whole number. Now do the power of ten lol. Use a calculator. Remember don't do it all at once. The powers mean multiplying separate for example: 10×10 equals 100. I hundred times10 equals 1000. That is powered by three because it is multiplying 1030 different times which makes it the power. Simple math these days ha ha