Math help please will give you Brainliest

Perimeter = 30 yd

Area = 43.301 yd²

Step-by-step explanation:

The Triangle has three equal sides of 10 yd each. It is therefore an equilateral triangle with equal angle measuring 60° each.

Thus:

✔️ Perimeter = sum of all sides = 10 + 10 + 10 = 30 yd

✔️Area can be found using, A = ½*ab*Sinθ

Where,

a = 10 yd

b = 10 yd

θ = 60°

A = ½*10*10*Sin 60

A = 43.301 yd² (3 decimal places).

77

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.