Answer:
A) 5.12mm³
Step-by-step explanation:
Step 1
Find the volume of the bigger pyramid
This is a triangular based pyramid.
The formula to use is given as Volume of Pyramid =
1/3 × Area of the triangle × Height
Area of the triangle = 1/2 × 3 mm × 4mm = 6mm²
Volume of the large pyramid = 1/3 × 6mm² × 5mm
= 10mm³
We are given the length of the small pyramid as 4mm
We would be using was is known as scale factor to find the volume of the small pyramid
The scale factor k = (Height of the small pyramid)³/ (Height of the Large pyramid)³
k = 4³/5³
k = Volume of small pyramid/ Volume of large pyramid
Volume of small pyramid = X
Volume of large pyramid = 10mm³
Hence,
4³/5³ = X/10
Cross Multiply
= 4³ × 10 = 5³ × X
X = (4³ × 10)/ 5³
X = 5.12mm³
The answer is 10 because you subtract 17-7
B
Because first “reduce” both sides of the top equation by the same to simplify it. See what both sides have in common.
They both have 3 long rectangles and 2 Sm. Squares.
That leaves, 2 long rectangles = 6 squares.
Which means that each long rectangle = 3 squares
The pen is 
centimeters long when scale is 
inches long and pen is 
shorter then the scale.
How to find the how much long is the pen ?
Scale is 
long and
We know that
And pen is shorten then the scale
So the length of the pen is
Learn more about the length of the pen here :
brainly.com/question/28048541
#SPJ4
Answer:
I think is A
Hope it helpsv
Step-by-step explanation:
