To find the volume of the model of the Earth, you will use the formula (rule) for finding the volume of a sphere.
You will divide the diameter by 2 to get the radius. 6.5/2 = 3.25 m
V = 4/3 x pi x r^3
= 4/3 x 3.14 x 3
V = 143.72 cubic meters
The volume of the model is approximately 143.72 cubic meters.
1st pic
Triangle
prism
a triangular end with a base of 27 mm and a height of 23 mm.
the length of each side is 56 mm and the width of each side
is 27 mm
SA=bh+(s1+s2+s3)H
SA=(27)(23)+(27+27+27)(56)
SA= 621 + 4536
SA=5157 mm^2
V = ½ blh
V = ½ (27)(23)(56)
<span>V = 17388 mm^3</span>
2nd pic
Cone
SA = πr(r + √(h^2 + r^2) (r = 4, h = 7)
SA = 4π (4 + √(7^2 + 4^2))
SA = 4π (4 + √(49 + 16))
SA = 4π (4 + √65 )
SA = 16π + 4√65
V = 1/3 πr^2h (r = 4, h = 7)
V = 1/3 π (4^2)(7)
V = 112/3 π
V = 37 1/3 π
3rd pic
sphere:
SA = 4 <span>π r^2 as you know r = 14/2 = 7
SA = 4</span>π(7^2) = 4π(49) = 196<span>π m^2
V = 4/3</span><span>πr^3
V = 4/3</span><span>π(7^3)
V = 4/3</span><span>π(343)
V = 1372/3 </span><span>π
V = 457 1/3 </span><span>π m^3
</span><span>
</span>
Answer:
584
Step-by-step explanation:
8 + 8 squared + 8 cubed is 8 plus 64 plus 512 which is 584
Answer:
C
Step-by-step explanation:
The slopes of perpendicular must multiply to -1, or in other words, be negative reciprocals.
Ex: 2/3 and -3/2 are perpendicular