Answer: -72m
Step-by-step explanation:
Simplify
Y = (-2x +2)^2 +8
(-2x^2 +4) +8
-2x^2 +12
Surface area of square pyramid having square base side = 10 cm and slant height = 20 cm is 340 square meters
<u>Solution:</u>
Given that
Shape of the roof is square pyramid.
Base length of square pyramid roof = 10 meters
Slant height of square pyramid roof = 12 meters
Need to calculate the surface area of the roof

Where s is side of square base and l is slant height.
In our case s = 10 meters and l = 12 meters
On substituting the given values in formula we get
Surface area of square pyramid 
Hence surface area of square pyramid having square base side = 10 cm and slant height = 20 cm is 340 square meters.
Answer:
The answer is -16.
Step-by-step explanation:
When you subtract 10 from -6, it need to be 10 lower than the original number. 10 less that -6 is -16