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3 years ago

HELP PLS !! What is the area of this trapezoid? Enter your answer in the box.

Mathematics

2 answers:

tamaranim1 [39]3 years ago

5 0

Answer:

A =315 cm^2

Step-by-step explanation:

The area of a trapezoid is found by

A = 1/2 (b1+b2) *h

where b1 and b2 are the lengths of the bases and h is the height

A = 1/2 ( 13+29) *15

A = 1/2 (42)* 15

A =315 cm^2

S_A_V [24]3 years ago

4 0

Answer:

$315 {cm}^{2}$

Step-by-step explanation:

$area \\ = \frac{1}{2} \times (a + b) \times h \\ = \frac{1}{2} \times (13 + 29) \times 15 \\ = \frac{1}{2} \times 42 \times 15 \\ = \frac{630}{2} \\ = 315 {cm}^{2}$

hope this helps

brainliest appreciated

good luck! have a nice day!

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Which ordered pairs is a solution to −5x + 3y > 12?

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3 years ago

Read 2 more answers

Is the ans i got correct? the total surface area is 33.8cm²

ElenaW [278]

Given:

A prism with height 5 cm and equilateral triangular base with side 2 cm.

To find:

The total surface area of the prism.

Solution:

Area of an equilateral triangle is:

$A_1=\dfrac{\sqrt{3}}{4}a^2$

Where, a is the side length.

Putting $a=2$ , we get

$A_1=\dfrac{\sqrt{3}}{4}(2)^2$

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$A_1=\sqrt{3}$

$A_1\approx \sqrt{3}$

The base and top of the prism are congruent so their area must be equal.

The lateral surface area of the prism is:

$LA=Ph$

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The lateral surface area of the prism is:

$A_2=(2+2+2)5$

$A_2=(6)5$

$A_2=30$

Now, the total surface area is the sum of areas of bases and lateral surface area.

$A=2A_1+A_2$

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$A=3.46+30$

$A=33.46$

Therefore, the total surface area is 33.46 cm².

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