Answer:
1.67 hours
Step-by-step explanation:
Let the original speed of Jonathan = units/hr
Let the original time taken by Jonathan = hours
Let the distance = units
Formula for distance is given as:
Given that half the distance is covered by original speed.
Half the distance is covered by increasing the rate by 25%.
i.e. increased speed:
Hence, Time taken:
Distance traveled is half of the total distance:
Dividing (1) by (2):
Answer: 1300 cm^3, 850 cm^2
Step-by-step explanation:
With a triangular prism, you need to calculate the surface area of the triangle first and then the length. Here's how to solve for the volume (A):
Triangles is b*h/2, plug in the equation
10*13/2
130/2
65
Now use the length of the rest of the shape, which is 20 cm.
65*20=1300
the volume is 1300 cm^3.
for B, finding the surface area requires you to analyze each individual part of the shape.
Each part colored in represents a different shape:
Red:
10*20=200
Blue:
13*10/2=65
65*2=130 (Two triangles)
Green:
13*20=260
260*2=520 (Two rectangles)
Add them all up together.
200+130+520= 850 cm^2
