Answer:
61.2 cm²
Step-by-step explanation:
The area (A) of a trapezoid is calculated using the formula
A = 
h (
+ 
)
Substitute in given values
A = × 4 × (13.8 + 16.8 ) = 2 × 30.6 = 61.2 cm²
Answer:75
Step-by-step explanation:
Area of triangle is 1/2 • base •height
Area of triangle= 1/2 • 3 • 10
=15
Area of rectangle is Length • Width
Rectangle = 10•6
=60
Area of shaded region = 60 + 15
Area = 75
42 degrees is the average.
Answer:
32
Step-by-step explanation:
35/8=140/x, x=32
Answer:
See below.
Step-by-step explanation:
tan a/2 = sin a / (1 + cos a)
cot a/2 = 1 / tan a/2
= 1 / sin a / (1 + cos a)
= (1 + cos a) / sin a.
