Answer:
591.1
Step-by-step explanation:
V=πr2h/3 v=π*8.4*2*8/3
v= volume = 591.1
h= Hight = 8
r= radius = 8.4
Answer:
15 : 31
Step-by-step explanation:
750 g : 1550 g ( divide both parts by 50 )
= 15 : 31 ← in simplest form
Answer:
a). total length of rope=132 m
b). total cost of the rope=$528
Step-by-step explanation:
Step 1
To get the total length of rope needed to cover the circular garden twice, we express this as;
P=πD
where;
P=perimeter
π=pi
D=diameter
In our case;
π=22/7
D=21 m
replacing;
P=(22/7)×21=66 m
2×P=2×66=132 m
total length of rope=132 m
Step 2
The expression to calculate the total cost can be written as;
total cost=cost per meter length×total length of rope
where;
cost per meter=$4
total length of rope=132 m
replacing;
total cost=4×132=$528
total cost of the rope=$528
