Answer:
Step-by-step explanation:
step 1
Find the circumference of the complete circle
The circumference is equal to
we have
substitute
step 2
Find the measure of the arc length for a central angle of 280 degrees
Remember that the circumference subtends a central angle of 360 degrees
so by proportion
step 3
Find the perimeter of the playground
Multiply by 3
Round to the nearest integer
Answer: <em>D) </em><u><em>He cannot construct a triangle</em></u>
Step-by-step explanation:
For a triangle to be possible <u>the largest side must be less than the sum of other two sides .</u>
In the given question largest side is 23 while other two sides are 8 and 14
Therefore for triangle to be possible 23 should be less than (8+14) but 23 > (8+14) .
Thus he can not construct a triangle using the given sides.
Hence correct option is <u><em>D)He cannot construct a triangle.</em></u>
Answer:
510 ft²
Step-by-step explanation:
in the triangle
base (b) = 5 ft
height of the triangle (h1) = 12 ft
height of the prism = 15 ft
Now
Lateral surface area (LSA)
= perimeter of triangular base * height
= ( 13 + 5 + 12) * 15
= 450 ft²
Total surface area
= LSA + 2 * area of triangular base
= 450 + 2 * 1 / 2 * b * h1
= 450 + 5 * 12
= 450 + 60
= 510 ft²
Hope it will help :)❤
The 3 angles of a triangle, when added, = 180 degrees
so if 2 of them are 70.....70 + 70 = 140
then the 3rd will be 180 - 140 = 40 degrees <==
