Can someone help answer the following questions plzz
1)
The area of the pentagon is 8560mmsquared
Change 8560mmsquared top cmsquared
2)
Each side of another pentagon has a length of 101 mm,correct to the nearest millimetre.
(i)Write down the least possible length of each side.
(ii)Write down the greatest possible length of each side
3)Jane's car uses 1 gallon of petrol for every 40 miles. A gallon of petrol costs £3.20
(i) Work out the cost of petrol for Jane's 320 km journey.