Answer:
25
Step-by-step explanation:
The perimeter of triangle is equal to the sum of all sides of triangle
then:
5y + (x+8) + (x+3) = 60
5y + 2x +11 = 60
5y +2x = 49 ..............................................................(1)
the hypotenuse - shorter leg = 10
hint ( shorter leg ) = x+3
then
5y - (x + 3 ) = 10
5y - x - 3 = 10
5y - x = 13 .................................................... (2)
from 1 and 2
5y +2x = 49 .................................................................. (3)
5y - x = 13 (multiply both sides by 2 )
10y - 2x = 26 ..................................................................(4)
by sum 3 and 4
15y = 75
then y = 75/15 = 5
then hypotenuse = 5y = 5 x 5 = 25
5) 19x - 6 = 8 + 9x +66°
(subtract 9x)
10x - 6 = 74°
(add 6)
10x = 80°
(divide by 10)
x = 8°
Then you put x into m< NMK
8 + 9(8°)
8 + 72°
m<NMK = 80°
6) because m<DER and m<REF are identical equations you can just divide m<DEF (96°) in half which is 48°
7) vertical pairs because they're right across from each other
Use A = (Pi)r^2
4.) 314.16
5.) 66.48 ( Half The Diameter Is The Radius)
Answer:
Base area (B) should not be added.
Step-by-step explanation:
Base area should not be added as cone is not solid. Only Lateral surface area is sufficient in order to find the required paper.
