Why does the size of an extended (in gparted) partition remain the same?

Question

linux

Increased the size of the partition (sdb5) in the fedora using gparted, but does not see the new space.
sdb5 turned out to be with unallocated space, checked the partition for errors and the unallocated space became clean (in gparted), but in fact, the volumes did not change, as it was 15, it remains.
Screenshot of gparted:
Screen of partition properties:
df -lh says that the size has not changed (probably I did not understand something):

[[email protected] ~]# df -lh
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/live-rw      3.9G  3.1G  746M  81% /
devtmpfs                 2.0G     0  2.0G   0% /dev
tmpfs                    2.0G  416K  2.0G   1% /dev/shm
tmpfs                    2.0G  1.1M  2.0G   1% /run
tmpfs                    2.0G     0  2.0G   0% /sys/fs/cgroup
/dev/sde1                7.6G  953M  6.6G  13% /run/initramfs/live
tmpfs                    2.0G   24K  2.0G   1% /tmp
varcacheyum              2.0G  187M  1.8G  10% /var/cache/yum
vartmp                   2.0G     0  2.0G   0% /var/tmp
/dev/mapper/fedora-root   15G   15G     0 100% /run/media/liveuser/cafa56d4-5962-4e3f-a353-56a6765fe3ed
/dev/sdc1                299G  146G  153G  49% /run/media/liveuser/300

And fdisk -l says it has changed:

Disk /dev/sdb: 59.6 GiB, 64023257088 bytes, 125045424 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x0000e706

Device    Boot     Start       End   Blocks  Id System
/dev/sdb1 *         2048    206847   102400   7 HPFS/NTFS/exFAT
/dev/sdb3         206848   1230847   512000  83 Linux
/dev/sdb4        1230848 125044735 61906944   5 Extended
/dev/sdb5        1232896 125044735 61905920  8e Linux LVM

Answer 1

The partition size has changed, the file system size has not.
resize2fs needs to be done.

Answer 2

increase LV in LVM
then fs size