Answer:
I think its b
Step-by-step explanation:
A=2πrh+2πr2=2·π·5·12+2·π·52≈534
You multiply 8 times 5 then add 3. So it's 43/8
C because 45.1%=45% so 45% is closest to -3 to 0 degress
Why did you delete my answer?
Answer:
![\sqrt[7]{(4x)}](https://tex.z-dn.net/?f=%5Csqrt%5B7%5D%7B%284x%29%7D)
³
Step-by-step explanation:
4x to 3/7 power in radical form
= ³
Answer:
266.39mm²
Step-by-step explanation:
The formula for surface area of a square based pyramid =
S.A = a² + 2a √a²/4 + h²
Where
a = base length = 8mm
s = Height of the pyramid = 12mm
Hence,
S.A = 8² + 2 × 8 × √8²/4 + 12²
S.A = 64 + 16 ×√64/4 + 144
S.A = 80 × √16 + 144
S.A = 80 × √160
S.A = 266.39 mm²
Therefore, the surface area of a square pyramid is 266.39 mm²
