4x +31 = 35
6x +39 = 45
35 + 45 = 80
I believe it would be 80
Answer:
9000watts
Step-by-step explanation:
m=50kg
g=10
h=6
t=3
formula=work done×time
work done=m×g×h
Answer=m×g×h×t
50*10*6*3=9000watts
Isabella’s error is Isabella should have divided the product of 12π and 9 by 3 to get V = 12π(9)/3 option fourth is correct.
<h3>What is a cone?</h3>
It is defined as a three-dimensional shape in which the base is a circular shape and the diameter of the circle decreases as we move from the circular base to the vertex.

Isabella equation:

The area of the base = 12π square cm

Thus, Isabella’s error is Isabella should have divided the product of 12π and 9 by 3 to get V = 12π(9)/3 option fourth is correct.
Learn more about the cone here:
brainly.com/question/16394302
#SPJ1
Answer:
10
Step-by-step explanation:
1. The area of triangle is = (A*h)/2, where h is the height grounded on side A.
2. Given the height 5 and the side 4 we get S(area)=(5*4)/2=10.