Answer:
61.27 cm
Step-by-step explanation:
(3.14)(11)(0.5) = 17.27
2+2+20+9+11+17.27 = 61.27
<span>(A) Find the approximate length of the plank. Round to the nearest tenth of a foot.
Given that the distance of the ground is 3ft.
In order to get the length of the plank,
we can use the this one.
cos 49 = ground / plank
cos 49 = 3 / plank
plank = cos 49 / 3
plank = 0.10 ft
</span><span>(b) Find the height above the ground where the plank touches the wall. Round to the nearest tenth of a foot.
</span><span>
The remaining angle is equal to
angle = 180 - (90+49)
angle = 41
Finding the height.
tan 41 = height / ground
tan 41 = height / 3
height = tan 41 / 3
height = 0.05 ft.
(A) 0.10 feet
(B) 0.05 feet</span>
72 inches equals 2 yards.
QUESTION 1
The dimensions of the rectangular blanket are;

and

The perimeter is given by,

We substitute the dimensions to obtain,

Expand bracket to get,

This simplifies to

QUESTION 2
When

The perimeter becomes



QUESTION 3
Area is given by


We expand to get,

This gives us,

QUESTION 4
If

Then the area becomes,




QUESTION 5.
When the length of the blanket is 5cm longer, then the length of the new blanket becomes


The width is still

The perimeter of the new blanket is

This implies that,


Comparing to the old perimeter which is

,
The perimeter changes by 10 units