Question

Find the total surface area of these solids

Answer 1

Step-by-step explanation:

We firstly find the surface area of only one face of the cube:

Sa=a²

Sa=1.2²cm

Sa=1.44cm²

Since the cube has 6 faces we multiply the surface area of one face(144cm²) with 6

Area(cube)=1.44cm²*6

=8.64cm²

Same thing with the prism but we have to find the area of one of his triangle face and rectangle face

S(triangle)=5mm*4mm*1/2

=10mm²

S(rectangle)=7mm*5mm=35mm²

The prism has 2 triangle faces and three rectangle faces so we multiply the area by those numbers and then we add those together to get the final area

S=10mm²*2+35mm²*3

S=20+105

S=125mm²

Hope this helped..

Hope this helped..Brainliest pls..