64 is a perfect square that provides 8 rows , and each contains 8 seats, this is the first perfect square after 50
Answer:
38 min
Step-by-step explanation:
cuz 12+8+18= 38
pls mark brainliest
First symmetrically cut the octagon to get 8 pieces. (So that you will get the idea that this polygon is divided into 8 triangles)
Then find the area of one of the triangles:
Area of Triangle = 
A =
× 12 × 19
A = 114 cm²
To find the area of the whole octagon shape:
A = 114 × 8 = 912 cm²
<em>Hope it helps!</em>
The answer to the first question is 30.