The perimeter of equilateral triangle DEF is 24 cm.
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Triangle</h3>
A triangle is a polygon with three sides and three angles. Types of triangles are<em> equilateral, isosceles, obtuse, scalene</em>.
Given that triangle ABC is equilateral, also triangle DEF is equilateral.
DE = DF = EF = 10 - 1 - 1 = 8 cm
Perimeter of DEF = 8 + 8 + 8 = 24 cm
The perimeter of equilateral triangle DEF is 24 cm.
Find out more on Triangle at: brainly.com/question/24382052
The number for 9 tens and 1 ones is 91.
Answer:
ok its a fraction the top is -1 and the bottom is 2
Step-by-step explanation:
Answer:
Both
Kinetic energy is 25 joule
Potential energy is 784.8 joule
Step-by-step explanation:
Given : A 2-kg bowling ball rolls at a speed of 5 m/s on the roof of the building that is 40 tall.
To find : Is it KE or GPE or Both
Solution :
Mass of the ball - 2 kg
Velocity of the ball - 5 m/s
Height - 40 tall
Both the energy is applied on the object.
1) Kinetic energy (KE)
Formula to find KE is 


Kinetic energy is 25 joule.
2) Potential energy (GPE)
Formula to find GPE is 
g is the acceleration due to gravity, 


Potential energy is 784.8 joule.
Answer:
3/4
Step-by-step explanation: