Answer:
Step-by-step explanation:
radius 70/2=35 cm
circumference=2πr=2π×35=70π cm
time taken to complete one revolution=0.8 s
or distance covered in 0.8 s=70π
distance covered in 1 s=70π/0.8=700 π/8=175 π/2 s=87.5 π≈274.9 cm
speed=274.9 cm/s=2.749 m/s
Volume of a Pentagonal Pyramid 5/6 <span>abh
Given,
a = 3 m
b = 5 m
h = 8 m
Volume of a pentagonal pyramid
<span>= </span><span><span>5/6 </span></span><span> 3 m </span><span>×</span><span> 5 m </span><span>×</span><span> 8 m</span>
= 100 m</span>³<span>
</span>
Answer:
-2x-14
Step-by-step explanation:
28 people going.....3 vans and 1 car....8 people per van
if there is 8 people per van, and there is 3 vans....8 * 3 = 24 people take the vans......leaving 28 - 24 = 4 people taking the car <==