Answer:
C
Step-by-step explanation:
Te unoccupied volume (V) of the cube is calculated as
V = volume of cube - volume of sphere
= 7³ - πr³ ( r is the radius and r = 7 ÷ 2 = 3.5 )
= 343 - π × 3,5³
= 343 - π × 42.875
= 343 - 179.59438
= 163.4....
≈ 160 cm³ ( to the nearest 10 cm³ )
Answer:
49°
Step-by-step explanation:
arccos x = 15/23
It would be atleast 40,000
Answer:
6.36 m
Step-by-step explanation:
The length of the tree's shadow is 7 m + 1.8 m = 8.8 m. Tanya's height is 1.3/1.8 times the length of her shadow. The tree height is, likewise, 1.3/1.8 times the length of its shadow, so is ...
tree height = (1.3/1.8)×(8.8 m) ≈ 6.36 m
The tree is about 6.36 m tall.