Answer:
The term 2lw is independent of the height
Step-by-step explanation:
This formula is usually obtained reasoning like this: the rectangular prism has 6 faces, thus the surface area is the sum of the areas of these faces.
2 faces are l×w rectangles, so their area is lw+lw=2lw. Note that we are not using the height to compute the area, then this is the independent term.
The 4 remaining rectangles involve the height as one of their dimensions, so their areas (2hw+2lh) depend on the height.
Answer: 214 ft^2
Step-by-step explanation:
A=πr^2
3.14(8.25)^2
3.14(68.0625)
213.71625
rounded to the nearest square foot: 214
Answer:
The Time in which sum of money double itself is 14 years .
Step-by-step explanation:
Given as :
The principal money = P
The rate of interest = R = 5 % payable half yearly
The Amount = Double of principal
Let The time in which sum become double = t years
I.e A = 2 P
<u>From Compounded method</u>
Amount = principal × 
or, 2 P = P × 
Or, 2 = 
Or, Taking log with base 10 both side
So,
2 =

or, 0.3010 = 2 t ×
1.025
Or, 0.3010 = 2 t × 0.010723
Or, 0.3010 = 0.021446 t
∴ t = 
I.e t = 14.03 years ≈ 14 years
So, The time period = T = 14 years
Hence The Time in which sum of money double itself is 14 years . Answer