Question

Pls solve the maths for me i will give bainliest. i need it due today.

Answer 1

x = 41 || surface area = 8950 cm³

Explanation:

1)

`c^(2)=u^(2)+z^(2)- (6x)/(y+4u)`

`-u^(2)-z^(2)+c^(2)=- (6x)/(y+4u)`

`+u^(2)+z^(2)-c^(2)=(6x)/(y+4u)`

`({y+4u})(+u^(2)+z^(2)-c^(2))={6x}`

`\frac{({y+4u})(+u^(2)+z^(2)-c^(2))}{6} =x`

`x =((10+4(-1))((-1)^(2)+7^(2)-(-3)^(2) ) )/(6)`

`x=41`

2)

Formula of surface area of cuboid:

2(lh + lw+ hw) square units

2(60*25+60*35+25*35)

2(4475)

8950 cm³