Three electric cars are tested by driving them around a track until the battery runs out. The table shows some information about their performance.
Complete the table.

Car
Total time travelled
(hours)
Average speed
(km/h)
Total distance travelled (km)
А A
4
35
B
40
180
3
150
U

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

21.4 i did it already for s1

step-by-step explanation:

the correct answer option is d. la = πrs.

step-by-step explanation:

we know that for a right cone, the lateral surface area is given by:

lateral area of right cone =

here the value under the square root is equal to slant height so replacing this value by in the formula to get:

lateral area of right cone =

therefore, the correct answer option is d.