Answer:
I think C) Exactly 18% of students.... is correct
Step-by-step explanation:
Answer:
1. acute angle, 2.right angle, 3.obtuse angle
Step-by-step explanation:
Answer:
75
Step-by-step explanation:
<h2>A=1/2h(a+b)</h2><h3> =10÷2=5(10+5)</h3>
=5×15
<h2> =75</h2>
66.5cm
Split the shape into a square and triangle and find the area separately
Square: 8*7=57
Triangle: 7*3/2 = 10.5
=66.5
Answer:
Perimeter = 317 m
Step-by-step explanation:
Given track is a composite figure having two semicircles and one rectangle.
Perimeter of the given track = Circumference of two semicircles + 2(length of the rectangle)
Circumference of one semicircle = πr [where 'r' = radius of the semicircle]
= 25π
= 25 × 3.14
= 78.5 m
Length of the rectangle = 80 m
Perimeter of the track = 2(78.5) + 2(80)
= 157 + 160
= 317 m
Therefore, perimeter of the track = 317 m
