S R
He has plans to do the following projects on the plot:
Project A. Purchase fencing material to enclose three sides of the plot as follows: SP.
PQ and QR.
Project B: Build a fancy wall on the front side. SR.
Project C: Construct paving for a third of the plot.
2.1
Determine the formulae that will be suitable for each of the projects mentioned above. For
each formula, also give the reason for your choice. Write down the information in the tabl
attached​

78.59 is the mean

step-by-step explanation:

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

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.