after 12 girls left the school assembly the ratio of the number of boys to girls is 3 to 4. if there were w boys at the assembly
1 answer:
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Answer: 62.8m^2
Step-by-step explanation:
Surface area of a cylinder =
r = 2m, h = 3m
= 62.83185
Answer:
Refer to the attachmenT
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The expressions for the width, W, and area, A, of the rectangle in terms of L are:
- W =
- L
- A =
The expression for the perimeter of a rectangle is given as:
P = 2(L + W)
where L is its length and W its width
a. Given that the perimeter of the rectangle is 13 feet, then;
13 = 2(L + W)
divide through by 2
= L + W
So that;
W = - L
The required formula for the width as a function of L is: W = - L
b. Area of a rectangle can be expressed as;
A = L * W
substitute the expression for width in that of area to have
A = L * ( - L)
= L -
A =
The expression for the area A is: A =