A farmer has farmland that is a rectangle 4 km long and 2.5 km wide.He wants to completely cover the farmland in dirt.He knows the area each truckload of dirt covers, but only in square miles.(a) Find the area of the farmland in square miles. Do not roundintermediate computations and round your final answer totwo decimal places. Use the table of conversion facts, asneeded.(b) The farmer wants to cover his farmland with dirt. He doesn'thave any to begin with and he can't buy partial truckloads ofdirt. Each truckload of dirt covers 0.9 mi². How many wholetruckloads of dirt does the farmer need to buy to completelycover his farmland?truckloads78°F(c) If each truckload of dirt costs $85.29, how much will heneed to spend on dirt? Write your answer to the nearestcentExplanationCheckaConversion facts for length1 inch (in)2.54 centimeters (cm)1 foot (ft)30.48 centimeters (cm)0.91 meters (m)1 yard (yd)1.61 kilometers (km)1 mile (mi)I need help with this math problem