Answer:
So we know the formula to calculate the area of the circular sector:
S=(r^2*π*a)/306°=
(5^2*3.14*40°)/360°= (1000*3.14) /360=8.72cm^2 so the right alternative should be the first one ,A.
Step-by-step explanation:
r - radius of the circle
a - corner of the circular sector
S - surface
Answer:
BC = 33.9
Step-by-step explanation:
here,
AB = 17, BC = ?, AC = 38
By Pythagoras Theorem
AB² + BC² = AC²
BC² = AC² - AB²
BC² = 38² - 17²
BC² = 1444 - 289
BC² = 1155
BC = √1155
BC = 33.9
H is the altitude of a right triangle, so h²=AD*DC=(20-4)*4=64
h=√64=8
D is the correct answer.
1 pizza for 4 students so 18 divided by 4 is 4.5 so 5 pizzas and there will be 1/2 a pizza left
Wow. Ok, really simple, honestly. Because 3(5x) = 15x. (3*5)(3*x) = 3*5 = 15*3 = 45x. Therefore, 15x and 45x do not correspond to each other at all, meaning that 3(5x) is not equivalent to (3*5)(3*x)!!!
