Question

an someone please help me with this math homework please am in 7th grade https://ibb.co/54MSvnp and when your done answer the question here is the answer key for the question that I gave you https://ibb.co/x7vXJnp

Answer 1

you need to find the area of each shape and add them all together

we have 4 triangles and one square

area of triangle = 1/2 * base * height

area of square = side * side

Answer 2

so let's look at the area of the triangle

we have a base of 25
and a height of 29

so put it into the formula

area = 1/2 * 25 * 29

area = ??

Answer 3

725

Answer 4

you forgot to multiply by 1/2 which is the same thing as 0.5

what is 0.5 * 725

Answer 5

362.5

Answer 6

and how many triangles do you have?

Answer 7

4

Answer 8

good good

so we're looking for LATERAL surface area

if we were looking for normal surface area, we would also have to find the area of the square

but LATERAL surface area is the area of all the sides but not including the base and the top

Answer 9

so that means it's only the area of the triangles

Answer 10

so each triangle has the same area and we have 4 triangles so you can either add them up 4 times or just multiply the area by 4

what is 4 * 362.5

Answer 11

1450

Answer 12

so that's the lateral surface area and your final answer

so whatever letter is on that slide, go write that on top of that blank that says 1450

Answer 13

ok thank you sir next question sir

Answer 14

it's the same thing, you're looking for lateral surface area

that means we want to find the area of the triangle

but here we have to be careful since we have 2 different kinds of triangles

we have a smaller triangle and a bigger triangle

Answer 15

let's look at the small triangle first

area of a triangle = 1/2 * base * height

the base of the smaller triangle is 6
and the height is 8

so what is the area?

Answer 16

24

Answer 17

24?

Answer 18

Yes! Good!

What about the other bigger triangle?

It has a base of 10 and a height of 12

area = 1/2 * base * height

Answer 19

60

Answer 20

Wonderful!!

So remember, LATERAL surface area is the area of all the sides
we don't include the base or the top

so we have two triangles with an area of 60
and two triangles with an area of 24

so the lateral surface area is

24 + 24 + 60 + 60 = ??

Answer 21

168

Answer 22

and you're all done!

So on your other page, where you see 168
go put the letter on top of it
I think it's an O? It's cut off in the screenshot but you should know what it is