• 2021 April(D05) Math Question 38

    Perimeter, Area, Volume

    - Triangles, Squares, Rectangles, Circles

    Area of Rectangle(square), Arithmetic sequences, Unit Conversions (Feet to inches, miles to feet, hours to seconds)
    Choice K

    The side of the 4th square is

    a4=a1+(4−1)d=18+(4−1)×18=72  inchesa_4=a_1+(4-1)d=18+(4-1)\times18=72 \; inches

    The area of the 4th square is

    Area=722  inches2Area=72^2 \; inches^2
    =722  ({1}{12}  feet)2=72^2 \; (\frac\{1\}\{12\} \; feet)^2
    ={722}{122}  feet2= \frac\{72^2\}\{12^2\} \; feet^2
    =({72}{12})2  feet2= (\frac\{72\}\{12\})^2 \; feet^2
    =62  feet2= 6^2 \; feet^2
    =36  feet2= 36 \; feet^2

    Skills you are tested for:

    Was this explanation helpful?

    • Comments

    To leave a comment,