By definition, the formula of the period of a pendulum is given by:
From here, we must clear the value of l.
We have then:
Raising both members to the square we have:
Then, passing gravity to multiply, we have:
Answer:
When clearing we have:
Answer:
Hello,
Step-by-step explanation:
using Thalès 's théorem :
x≈6.7 (i don't know what d.p. means , perhaps 1 decimal after the point)
Answer:
Step-by-step explanation:
Comparing triangle EGD and triangle ELA
AL/DG = EL/EG
AL = x, DG = 3, EL = 5+5+5+5= 20
EG = 5
x/3 = 20/5
x/3 = 4
x = 3×4
x = 12
Answer:
40 square feet tiles.
Step-by-step explanation:
It may help to have a visual. Anyways, if the countertop contains 40 square feet, that means the area is 40 square feet. Keep in mind that 12 inches = 1 foot. So if we have 1 foot squared tiles and we need to find how many tiles it takes to cover the countertop, we use division. 40 square feet ÷ 1 square feet tiles = 40 square feet tiles.