Answer:
78.6km/h
Step-by-step explanation:
<em><u>Speed=distance÷time</u></em>
<u>distance</u>=21km
<u>time</u>=16 minutes<u>(convert into hour by dividing it</u> <u>with 60)</u>
=16÷60=0.267
Speed=21÷0.267=78.65km/h


Answer:
Sides other than hypotenuse of an isosceles triangle are equal.
Let the other two sides be x each.
Using pythagoras theorem
x
2
+x
2
=(5
2
)
2
2x
2
=50
⇒x
2
=25
⇒x=5cm
So the other two sides are 5cm each.
Answer:
12.60
Step-by-step explanation: