Step-by-step explanation:it a tricked question
Answer:
A2: 4*4*4 = 64 cm³; 6*6*6 = 216 cm³; etc...
B2: 7*4.5*4 = 126 cm³; 10.5*6*2 = 126 cm³; etc...
Step-by-step explanation:
So in A2 you have cubes, so l=b=h, and only one has to be given, called the "length of side".
In B2 they are different, hence there are 3 rows with l, b and h. But still you multiply them l x b x h
Answer:
1. Area of the garden = 84 inch²
2. Diameter = 12 ft
Step-by-step explanation:
1 The area of the garden can be computed when you separate the composite shape into simpler ones. The shape can be separated into a trapezium and a rectangle.
The area of the garden will be the area of the rectangle plus the area of the trapezium.
area of rectangle = length × width
length = 10 inches
width = 5 inches
area of the rectangle = 10 × 5 = 50 inches²
Area of the trapezium = 1/2(a + b)h
a = 7 inch
b = 15 - 5 = 10 inch
h = 4 inch
area of the trapezium = 1/2 (7 + 10)4
area = 1/2(17)4
area = 68/2
area of the trapezium= 34 inch²
Area of the garden = 34 inch² + 50 inch² = 84 inch²
2. volume of a cylinder = πr²h
volume = 252π ft³
h = 7 ft
252π = π × r² × 7
252π = 7πr²
divide both sides by 7π
r² = 252π/7π
r² = 36
square root both sides
r = √36
r = 6 ft
Diameter = 2 × radius
Diameter = 2 × 6
Diameter = 12 ft
A Yes as the x values are all different
B f(x) = 5x + 14
when x = 2 , f(x) = 5(2) + 14 = 24
x = 5, f(x) = 39,
Each value of f(x) is greater than corresponding ones in the function in A.
when x = 9 f(x) = 59 which is greater than for first function ( =12)
First function is a decreasing while f(x) is increasing
C f(x) = 64 = 5x + 14
5x = 64 - 14 = 50
x = 10