Answer:
384 cm²
Step-by-step explanation:
Since it is a square pyramid, the total surface area of the pyramid is the area of its square base plus the area of its 4 triangular faces.

Area of a triangular face
= ½ ×12 ×10
= 60 cm²

Base area of pyramid
= 12 ×12
= 144 cm²
∴ Surface area of pyramid
= 4(60) +144
= 240 +144
= 384 cm²
90% Because you he’s been getting 85 and higher
Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole given a part and the percent.
Answer:

Step-by-step explanation:
Given

--- Those that do not get recommended amount of exercise
Required
The percentage that do not get the recommended amount of exercise
From the question, we have 79% to be the percentage of adults that do not get the recommended amount of exercise. This 79% represents the required percentage
Hence:
