linear function; growth factor of 4
Answer:
=561.2 square feet
Step-by-step explanation:
top rectangle=19×8=152
bottom rectangle=5×8=40
two slanting rectangles=8×14×2=224
two side trapezium=(19+5)÷2=12
1/2×12×12.1×2=145.2
add them all
152+40+224+145.2=561.2
Step-by-step explanation:
the angle of elevation of the sun is θ is related to the given sides of the right triangle (assuming the ground is horizontal and the flag pole is vertical) by tangent.
the shadow is adjacent to the angle while the flagpole is opposite to it.
so to find the angle of elevation:
arctan(20/8.9)
= 66.01 degrees
comment if you have any doubt or need further help.
So we factor out the number and find the number in both numbers so
117=3*3*13
351=3*3*13*3
so the greatest common factor of 117 and 351 is 3*3*13=117
35=7*5
149=prime=149 (prime means no whole factors)
Use the Cosine Rule
q^2 = 20^2 + 30^2 - 2^20*30 cos 15
= 140.89
so q = sqrt 140.89 = 11.9 (answer)
