If angle 1 = 145°, and angle 2 = 40°, show that angle 3 = 105°. (picture below)

You know there is 180 degrees on a line so angle TUS is 35.

You also know the sum of a triangles angles is 180, so 40 + 35 + angle 3 = 180.

This means angle 3 = 180 - (40+35)

or angle 3 = 105

Step-by-step explanation:

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.

i don't see any steps below, sweetheart