When making a sensitive bomb, how do you make a radius?

If you are trying to make a simple Land Mine type object, we can do this!

local debounce = true -- Just to use as a cooldown
local Respawn = 10 --How long it takes for the LandMine to come back

script.Parent.Touched:connect(function(plr)
    if plr.Parent:FindFirstChild('Humanoid') ~= nil then --Making sure it was a player that touched the Mine
    if debounce == true then --Making sure this doesn't fire before our cooldown is finished
    debounce = false
        x = Instance.new('Explosion', workspace) --Inserting the explosion 
        x.Position = script.Parent.Position --Making the explosion happen exactly where our LandMine is
        script.Parent.Transparency = 1   --Pure aesthetic
        script.Parent.CanCollide = false --For aesthetic...
        wait(Respawn) --Waiting our 10 seconds, change local Respawn however long you want it to be
        script.Parent.Transparency = 0
        script.Parent.CanCollide = true
    debounce = true --Cooldown is over
    end
    end
end)

Just put this code inside of a regular script, and put that script inside of any part and KABOOM!

Hoped this help. If so, please accept my answer!

If you have any questions about the code or more questions in general, just ask!