Can someone help me with this? thank you!

Mathematics

2 answers:

hammer [34]1 year ago

3 0

Answer:

240cm³

Step-by-step explanation:

To find our answer we will multiply the volume, width, and height.

4 · 20 · 3 = 240. Therefore, 240cm³ is our answer.

Have a good day!

disa [49]1 year ago

3 0

$\qquad\qquad\huge\underline{{\sf Answer}}$

Let's calculate its volume ~

Volume of a rectangular prism is :

$\qquad \sf \dashrightarrow \:v = l \cdot w\cdot h$

$\qquad \sf \dashrightarrow \:v = 20 \cdot 4\cdot 3$

$\qquad \sf \dashrightarrow \:v = 240 \: \: cm {}^{3}$

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Identify the lateral area and surface area of a regular triangular pyramid with base edge length 14 cm and slant height 15 cm

posledela

Answer:

D) L = 315 cm2 ; S = 399.9 cm2

Step-by-step explanation:

Lateral area;

3 × (½)(14)(15)

315 cm²

Surface area:

315 + (½)(14)(14)sin(60)

399.8704896 cm²

6 0

3 years ago

Read 2 more answers

Refer to the photo :D

OlgaM077 [116]

well, we know the ceiling is 6+2/3 high, and Eduardo has 4+1/2 yards only, how much more does he need, well, is simply their difference, let's firstly convert the mixed fractions to improper fractions and then subtract.

$\stackrel{mixed}{6\frac{2}{3}}\implies \cfrac{6\cdot 3+2}{3}\implies \stackrel{improper}{\cfrac{20}{3}} ~\hfill \stackrel{mixed}{4\frac{1}{2}}\implies \cfrac{4\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{9}{2}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{20}{3}-\cfrac{9}{2}\implies \stackrel{using ~~\stackrel{LCD}{6}}{\cfrac{(2\cdot 20)-(3\cdot 9)}{6}}\implies \cfrac{40-27}{6}\implies \cfrac{13}{6}\implies\blacktriangleright 2\frac{1}{6} \blacktriangleleft$