The answer to your question is C.
Answer:
Area of octagon = 100 - 2 = 98 cm²
Step-by-step explanation:
Area of octagon = area of square - area of 4 triangles that are formed in four corners
Area of square:
Side = Width of the octagon = 10 cm
Area = side * side
= 10 * 10
= 100 cm²
Area of triangle:
Base = 2cm
height = 2 cm
Area =
=
= 2 cm²
Area of octagon = 100 - 2 = 98 cm²
So 27 are in total
Minus 12 who have home computers
Therefore 27-12=15
15 students do not have home computers
Good luck
Answer:
Try 336
Step-by-step explanation:
14+14=28
triangle area= 12x6x28=84
rectangle area= 28x9=252
252+84= 336
answer=336