Answer: c
Step-by-step explanation:
The answer would be 15
Explanation:
20-x=15
To find ‘x’ subtract the base numbers 20-15=5
And to find ‘3x’ take the answer from the last equation and multiply 3*5=15 so in total your answer would be 15
Answer:
6000 square millimeters
Step-by-step explanation:
Side length of the slanting side can be calculated using the Pythagorean theorem,
L = sqrt(30^2+40^2) = 50
sufrace area of a triangular prism
= surface area of the end sections + the surface area of the three side faces
= 2*(30*40/2) + 40*(30+40+50)
= 1200 + 4800
= 6000 mm^2
45 is the correct answer for your phone