Answer:
4.24
Step-by-step explanation:
Answer:
4/3 pi≈3
Step-by-step explanation:
40/360 = 1/9
S= pi*r²* n/360
S= 3*4*1 /9 = 4/3
Answer:
1. 14 inches and 21 inches
2.

Step-by-step explanation:
1.Since the rectangle has been increased by a factor of 7. Therefore

2. As you have increased it by a factor of 7. To reduce it, multiply by a factor of

Answer:
D. The volume of square based pyramid is 1280 
Step-by-step explanation:
Given:- A square base pyramid of,
Base edge (b) =16 inches.
Height (h)= 15 inches.
To find:- Volume of the square bases pyramid=?
Solution:-
As the given pyramid is a square based pyramid, therefore the formula to find the volume for square based pyramid is,
Volume of square based pyramid = 
where, b is the base edge and h is the height of the pyramid.
Volume of square based pyramid = 
Volume of square based pyramid = 
Volume of square based pyramid = 
Volume of square based pyramid = 1280 
Therefore the volume of square based pyramid is 1280 