All categories

3 years ago

What are the surface area and volume of a regular triangular pyramid with a height of 9 cm and a slant height of 15 cm?

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

3 0

I believe it is 135.
Hope this helps

You might be interested in

One weekend, 600 tickets were sold to a carnival for a total of $2400. If an adult's ticket costs $6 and a child's ticket costs

erastovalidia [21]

Answer:

adults : 0 children: 600

Step-by-step explanation:

x + y = 600

6x＋4y = 2400

4×(x + y = 600) = 4x＋4y = 2400

(6x＋4y = 2400) － (4x＋4y = 2400) = x=0

so y=600

8 0

2 years ago

5/6 of all the money in Salma's bank account is ₹55,000. how much money does Salma have in her bank account?

Vedmedyk [2.9K]

Answer:

₹66,000

Step-by-step explanation:

If 5/6 is 55,000 then just multiply 55,000 by the reciprocal 6/5 to get 66,000

8 0

1 year ago

Please help with this will give brainliest to the first answer!

kozerog [31]

Answer:

your answer is 415 in^3

Step-by-step explanation:

ok the equation in finding the volume of a come is

V= $\pi r^2 \frac{h}{3}$

step 1: plugin

$\pi =3.14$

3.14 x 6^2 x 11/3

3.14x 36 x 11/3 = (6/3 turns into a 2)

113.04x 11/3= 114. 48, when rounded, it's going to give you 415 in^3

5 0

2 years ago

Evaluate the following double integral where a = 2y

Keith_Richards [23]

Change the order of integration.

$\displaystyle \int_0^1 \int_{2y}^2 \cos(x^2) \, dx \, dy = \int_0^2 \int_0^{x/2} \cos(x^2) \, dy \, dx \\\\ ~~~~~~~~ = \int_0^2 \cos(x^2) y \bigg|_{y=0}^{y=x/2} \, dx \\\\ ~~~~~~~~ = \frac12 \int_0^2 x \cos(x^2) \, dx$

Substitute $u=x^2$ and $du=2x\,dx$ .

$\displaystyle \frac12 \int_0^2 x \cos(x^2) \, dx = \frac14 \int_0^4 \cos(u) \, du = \frac14 \sin(u) \bigg|_{u=0}^{u=4} = \boxed{\frac{\sin(4)}4}$

4 0

7 months ago

Please show working out, thanks!

Vedmedyk [2.9K]

Answer:

C. x+log(z)

Step-by-step explanation:

Taking the log of the equation gives ...

log(z) = (x -y)log(1/10) = (x -y)log(10^-1)

log(z) = (x -y)(-1) = y -x

Adding x gives ...

x + log(z) = y . . . . . matches choice C

4 0

3 years ago