HELPP 1+1 OR I'LL HAVE A 000
1 answer:
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Answer:
38.485(correct to 5 significant figure)/ 12.25π
Step-by-step explanation:
=38.485(cor. to 5 sig.fig.)/ 12.25π
to find arc length of sector,we need to π(radius²)(sector's degree divided by 360 degree)
Answer:
16 square meters
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one. Please have a look at the attached photo.
My answer:
As we know the surface area of a square pyramid is:
SA = + (2 × a × s), where a is the base length and s is the slant height.
Given information in the photo,
The base area of the square pyramid: =
= 4 square meters
The slant height is 3 meter, so the area of the 4 sides: (2 × a × s) = 2*2*3 = 12
=> the surface area of the square pyramid is: The base area + the area of the 4 sides
= 4 + 12
= 16 square meters
