The radius of a 80 cm wide road roller is 77 cm. calculate the number of revolutions that the roller will take to cover an area of 96.8 meter square

25 revolutions

Step-by-step explanation:

step 1

Find the circumference of the road roller

The circumference of a circle is equal to

we have

Convert to meters

assume

substitute

step 2

Calculate the number of revolutions that the roller will take to cover an area of 96.8 meter square

Remember that

The circumference of complete circle subtends one revolution

The circumference multiplied by the wide of road roller is equal to the area cover for the roller in one revolution

---->

so

using proportion

Find out the number of revolutions for an area of 96.8 meter square

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.

false

step-by-step explanation: