Answer:
Perimeter = 60m
Area = 120 m²
Step-by-step explanation:
9. Perimeter = 2(length=width)
Plug in the given distances into the equation
Perimeter = 2(16m+14m)
Perimeter = 2(30m)
Perimeter = 60m
10. Area = length*width
Plug in the given distances into the equation
Area = 15m * 8m
Area = 120 m²
7. 22:00 hours
This is because airlines write it like military time where they go from 1:00 to 24:00
8. If she was in 56 years old, then she was born in 1985-56 which gives us...
She was born in 1929
Given:
Volume of toy=231 cm³
Diameter of a hemisphere= 7 cm
cone and hemisphere have equal radius.
radius of hemisphere = radius of cone = 3.5 cm
Height of hemisphere= radius of hemisphere= 3.5 cm
Let H be the height of toy
H= height of cone+ height of hemisphere
H = h + r , ( h = height of cone)
H = h + 3.5
volume of toy = volume of cone + volume of hemisphere
Volume of toy= 1/3πr²h + 2/3πr³
Volume of toy=πr²/3(h+2r)
231 = (22/7)×(3.5)² ×(1/3)(h+2×3.5)
231×3 =( 22×3.5×3.5)/7 (h+7)
h+7 = (231×3×7)/(3.5×3.5×22)
h+7 = (3×3)/(.5×.5×2)
h+7= 900 /50= 90/5= 18
h+7= 18
h=18-7
h= 11 cm
Height of toy = h+r
Height of toy = 11+3.5= 14.5
Height of toy =14.5 cm
Hence, the height of the toy = 13.5 cm
Answer:
D
Step-by-step explanation:
0.45-0.48 is smaller to larger so D is 45,46,47,48 so thats your answer
Answer:
B
Step-by-step explanation:
i am not sure