Answer:
True
m∠T = 40.4°
Step-by-step explanation:
We know all the sides of the triangle but we do not know any of its angles.
To find out if the angle T = 40.4 ° we use the cosine theorem.
According to the cosine theorem:
Where is the angle between a and b.
In this case:
Then we clear α from the formula and verify that it is equal to 40.4 °
I like using
Is/of=%/100
(Is over of is equal to percent over a hundred)
I did the first three but u should try the last 2 by yourself to see if you understand
Answer:
Perimeter =110 feet
Area=360 feet^2
Step-by-step explanation:
Firstly, we can draw diagram
Perimeter:
we will find perimeter of rectangle and right angled triangle
and then we can add them to find perimeter
Perimeter of rectangle = 15+20+15+20
Perimeter of rectangle = 70
Perimeter of triangle = 17+8+15
Perimeter of triangle = 40
so,
total perimeter = (Perimeter of rectangle)+(Perimeter of triangle)
total perimeter =70+40
total perimeter =110 feet
Area:
We can find area of rectangle and area of right angled triangle
and then we can combine them
Area of rectangle is
Area of triangle is
now, we can combine
total area =300+60
total area =360 ft^2
The answer to you question is 2.78
It should be two if this is pre calc.