Below is a student's mathematical model of the farmhouse roof with measurements added.
The attic floor, ABCD in the model, is a square. The beams that support the
roof are the edges of a block (rectangular prism) EFGHKLMN. E is the middle
of AT, F is the middle of BT, G is the middle of CT and H is the middle of DT.
All the edges of the pyramid in the model have length 12 m.
Calculate the area of the attic floor ABCD.

mx+89b(-98)nb

step-by-step explanation:

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99

ur right ive taken the test

step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west