Answer:
1665
Step-by-step explanation:
This is AP, where:
- First term is: 12= 3*4
- Last term is: 99= 3*33
- Common difference is: 3
- Number of terms is: 33- 3= 30 (because the 4th term is included)
The sum of all two - digit natural numbers which are divisible by 3 is 1665
1b,
2b,
3a, which grade is this?
Answer:
37.5
Step-by-step explanation:
3/8
3 divided by 8= .0375
.0375 times 100= 37.5
Its is called A positive integer or a natural number.
Answer:
The surface area of the award is 
Step-by-step explanation:
we know that
The surface area of the square pyramid is equal to the area of the square base plus the area of its four lateral triangular faces
so
![SA=6^{2}+4[\frac{1}{2}(6)(8)]=132\ in^{2}](https://tex.z-dn.net/?f=SA%3D6%5E%7B2%7D%2B4%5B%5Cfrac%7B1%7D%7B2%7D%286%29%288%29%5D%3D132%5C%20in%5E%7B2%7D)