Question

Please help me! Will give medal :)
Match each shape with its surface area. Use three point one four for pi and round to the nearest whole number where necessary.

Answer 1

Match each term with definition.

1.square pyramid: base length 6 meters, slant height 10 meters
2.cone: radius 4 meters, slant height 8 meters
3.square pyramid: base length 5 meters, slant height 11 meters
4.cone: radius 6 meters, slant height 4 meters

A)151m
B)156m
C)135m
D)188m

Answer 2

@ElisaNeedsHelp help me please

Answer 3

I g2g for now bye sorry ill see when i get back

Answer 4

@mathslover

Answer 5

If I just tell you the formulas for calculating the surface areas, then can you just put the values and find the answers?

Answer 6

umm maybe

Answer 7

FOR CONE : Lateral Surface area = \(\pi \times r \times l\) ; l = slant height
FOR Right Square Pyramid it is :
\( = a^2 + 2a \sqrt{\cfrac{a^2}{4} + h}\)

a= base edge
h - height (NOT SLANT HEIGHT)

Answer 8

If you are given with slant height in case of Right Square Pyramid then :
SA = \(a^2 + 2\times a \times l \)

Answer 9

ok thank you!

Answer 10

You're welcome :) Good Luck and if you have any problem in working out with this , let me know.

Answer 11

ok!

Answer 12

@Shizen

Answer 13

@shadow22 ... try using the formulas that @mathslover gave

Answer 14

I tried for number 4. but the answer is wrong

Answer 15

total surface area of cone = pi r ( r + l)
where r = radius and l = slant height

Answer 16

3.14*6*4=75.36 for #4

Answer 17

no use the formula that i gave
pi* radius ( radius + slant height)

Answer 18

@shadow22 ?? there ?

Answer 19

I got 117.04

Answer 20

well lemme show you the work
its the question ----> .cone: radius 6 meters, slant height 4 meters
and formula for Total Surface Area of cone is
pi *radius ( radius + slant height )

plugging in the values we get
pi *6 ( 6 + 4)
=>pi * 6 * 10
=
now solve it further..!

Answer 21

i got 188.4 now

Answer 22

:D...
and now round it up..

Answer 23

188

Answer 24

:D