Question

7)



A plane intersects a rectangular prism as shown. Describe the cross-section.
A) circle
B) rectangle
Eliminate
C) trapezoid
D) triangle






8)
If you know the diameter of a circle, which statement describes how to find the AREA?
A) Multiply the diameter by π.
B) Square the diameter and multiply by π.
C) Divide the diameter in half and multiply by π.
D) Divide the diameter in half, square, and multiply by π.




Julie has a rectangular front door. The area of her door is 96 ft2 and the width is 8 ft. What is the height of the door?
A) 12 ft
B) 14 ft
C) 40 ft
D) 80 ft





14)
Which set of segment lengths could be used to construct a triangle?
A) 2, 12, 19
B) 4, 7, 13
C) 4, 5, 12
D) 13, 2, 12

Answer 1

7ka b wala hai 8 ka a wala

Answer 2

$7. Figure \: not \: attached .$

_________________

$8. Diameter \:of \:a \:circle = d$

$Area \: of \: the \: circle (A) = \pi \Big(\frac{d}{2}\Big)^{2}$

$Option \: \pink { (D) } \: is \: correct .$

___________________

$Given \: width \: of \:the \:door (w) = 8 \:ft \\Let \: Height \: of \:the \:door = h \:ft$

$Area \:of \:the \:door = 96 \: square \:ft$

$\implies h \times w = 96$

$\implies h \times 8 = 96$

$\implies h = \frac{96}{8}$

$\implies h = 12 \:ft$

Therefore.,

$\red { Height \:of \:the \:door } \green {= 12 \:ft}$

___________

$None$

$\underline { \red{ Reason }$

$Sum \:of \: any \: two \:sides \: of \: a \\</p><p>triangle \: greater \: than \: third \: side$

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