What formula can I use to find out the solution?

Find the area of the region under the graph nfthe function fun the interval [1, ]. 2 f It) = _; 1,, 080 square um X Need Help? _7 _7 TANAFCALCB 6.4.010. Find the area of the region under the graph of Fun [3, b]. 6 = ; 1, 5 RX) x2 [ ] Need Help? TANAPCALCB 6.4.013. Find the area of the region under the graph nfthe function fun the interval [727, 71]. fix) : 2 e/E square units Need Help? _ _ 5. TANAFCALCB 6.4.016. Find the area of the region under the graph ofthe function fan the interval [3, 6]. f (1) = c' .l.' square units