Answer:
The correct option is 1. The area of cross section area is 48 mm².
Step-by-step explanation:
From the find it is noticed that the cross section is a rectangle with length 4 mm and width is 12 mm.
The area of a rectangle is the product of its dimensions.
Where, l is length of the rectangle and w is width of the rectangle.
The area of cross section is
Therefore the area of cross section area is 48 mm². Option 1 is correct.
80/400 as a decimal is 0.2
Answer:
See below.
Step-by-step explanation:
The 3 angles of all triangles add up to 180 degrees.
An isosceles triangle has 2 of its angles equal.
So if one of the angles is 130 degrees then there cant be another one of 130 degrees as that would make 260 degrees.
So the other 2 angles are equal and their measure is (180 - 130) / 2
= 50 / 2
= 25 degrees.
The 2 equal angles are both 25 degrees.
Answer: 67.5 mph
Step-by-step explanation:
The formula for speed is:
= Distance / Time
Distance = 658.125 miles
Time will need to be converted to a decimal. You may convert only the minutes into hours as the hours are already hours.
= 45/60 minutes
= 0.75 hrs
= 9 + 0.75
= 9.75 hours
Speed = 658.125 / 9.75
= 67.5 mph
