The area of plate which is covered by the napkin is equal to the area of folded napkin.
Before finding the area of folded napkin, we should find the dimension of the napkin.
Find the length of the leg side, the two leg has similar length.
perimeter = 38
l + l + 8 = 38
2l + 8 = 38
2l = 30
l = 15
Each leg is 15 cm long.
Find the area of folded napkin
area = 1/2 × s × s × sin of angle between the sides
area = 1/2 × 15 × 15 × sin 30°
area = 1/2 × 15 × 15 × 1/2
area = 225/4
area = 56.25
to the nearest whole number >> 56 cm²
The answer is third option
Answer:
18
Step-by-step explanation:
volume of cone=πr²*h/3
21/3=7, 3.14*7=21.98,1780.38/21.98=81,square root of 81=9,9+9+18
The final solutions are C1=7, C2=14
Did you get the answer me and you need help and no one dont want to help i hope you found the answer because i really need it math is very hard.
Answer:
x = 8
Step-by-step explanation:
A common pythagorean triplet is 7, 8, 9
