Answer:
The area of the deck after she doubles the length and width will be of 384 square feet.
Step-by-step explanation:
Area of a rectangle:
The area of a rectangle of length l and width w is given by:

Doubling length and width:
If we double the length and the width, the dimensions are 2l and 2w. Thus, the area will be of:

That is, if both dimensions are doubled, the area is multiplied by 4.
What will the area of the deck be after she doubles the length and width?
Was 96. Then, both dimensions were doubled, and the area has to be multiplied by 4.
96*4 = 384
The area of the deck after she doubles the length and width will be of 384 square feet.
Answer:
a
Step-by-step explanation:
Cylinders:
Ratio of radii = 1 : 4
Radius of two cylinders are: r , 4r
Ratio of height = 3 :1
Height of two cylinders are: 3h , h
Lateral surface area of cylinder = 2πrh
Ratio of lateral surface area= 2π* r * 3h : 2π* 4r * h
= 3 : 4
Answer:
5w -6
Step-by-step explanation:
(W2 – 4w - 1)+(-5 + 5w2 – 3w)
combine like terms in the 2 groups
(-2w-1)+(-5+5w(2) -3w)
(-2w-1)+(-5+10w-3w)
(-2w-1)+(-5+7w)
now add/subtract all
5w -6