Respuesta :

leena

Hi there! :)

Answer:

SA = 240m².

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Find the surface area of this square pyramid by calculating the areas of each face:

Area of the square base: A = s²

A = 10²

A = 100 m²

Area of the triangular lateral sides: A = 1/2(bh)

A = 1/2(10 · 7)

A = 1/2(70)

A = 35 m²

There are four triangular faces, therefore:

35 × 4 = 140 m²

Add up the two areas:

140 + 100 = 240m².

DatGuy323

Answer: the surface are of the pyramid is 240m²

Step-by-step explanation:

This pyramid is made of 5 sides, 4 triangles with a height of 7 and a base of 10, and a square with a side length of 10.  

First, calculate the area of the square: 10 * 10 = 100.

Then calculate the area of the triangles: 1/2 * 10 * 7 = 35.  Then, multiply 35 by 4 because there are 4 triangles to get 140.

Then add 100+140 to get that the surface are of the pyramid is 240m²

Hope it helps <3

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