A conical tent is made of canvas that has a base that is 34 feet across and a slant height of 12 feet to the nearest whole unit what is the area of the canvas including the floor

The lateral area is π r ℓ units²

The base is 20 feet across so the radius is 10 feet

Multiply 3.14 * 10 * 14

3.14 * 10 = 31.4

31.4 * 14 = 31.4 * 10 + 31.4 * 4

= 314 + 120 + 4 + 1.6

= 434 + 5.6

= 439.6