Question

Can u help me pls ik u lookin so pls help me

Answer 1

1240.4 mm²

Explanation:

Surface area: add all of the sides' areas

Area of a triangle is 1/2 bh

1/2 (16)(20)=160(one side)

Since there are 5 sides we would do 160x5=800

Then adding the 2 areas together

440.4+800=1240.4

Answer 2

1240.4 mm²

Hope this helps!

Explanation:

The surface area of the regular pyramid is the area of the base plus the area of the 5 triangles.

One triangle has the formula of
`(1)/(2)` × Base × ( Slant ) Height.

One triangle has the area of
`(1)/(2)` × 16 × 20 = 8 × 20 = 160 mm²

160 mm² × 5 ( cause there are 5 triangles ) = 800 mm²

800 mm² + 440.4 mm² = 1240.4 mm²