Area of sector=sectorfraction times area
sector fraction=angle/360
area=pir^2
r=10
area=pi10^2=100pi
so
5pi/100pi=xdeg/360
1/20=x/360
times both sides by 360
18=x
answer is 18 degres
Answer:
33.49cm³
Step-by-step explanation:
Volume of sphere =4/3πr³
diameter = 4cm
radius = diameter/2 = 4/2 = 2
Volume of sphere =4/3πr³= 4/3 x 3.14 x 2³ = 4/3 x 3.14 x 8 = 4/3 x 25.12 = 4x25.12/3 = 100.48/3 = 33.49cm³
Answer:
a) (1|4)
b) 3
c) 3
Step-by-step explanation:
the turning point is when the graph is at it's highest or lowest point, so here it is 1 for x and 4 for y. I'm not sure if i did b and c right but i think i did
Step-by-step explanation:
the formula for volume of a cylinder is :
r=d/2
r = 7/2
h= 10
v= 22/7×7/2×10
v= 110cm³
