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lilavasa [31]
2 years ago
15

Geometry question, any help is appreciated

Mathematics
2 answers:
Gekata [30.6K]2 years ago
6 0
Volume ratio      250 : 686 = 125 : 343
Radius ratio       ∛(125) : ∛(343) = 5 : 7  scale factor
Area ratio           (5)² : (7)² = 25 : 49

Scale factor (5:7),  area ratio (25:49), volume ratio (125:343)
kodGreya [7K]2 years ago
4 0

Answer:

Hence, the ratios are given by 5:7, 25:49, 125:343.

Step-by-step explanation:

We are given two spheres such that:

Volume of small sphere V_{s} = 250 yd^{3}

Volume of large sphere V_{l} = 686 yd^{3}.

Then the ratio of volume = 250 : 686 = 125 : 343.

Since, the volume of a sphere = \frac{4 \pi \times r^{3}}{3}, this gives us that the ratio of the radius = ∛V_{s} : ∛V_{l}

i.e. The ratio of the radius = ∛125 : ∛343 = 5 : 7.

Further, as the surface area of a sphere = 4 \pi \times r^{2}, this gives us that the ratioof surface area = r_{s} ^{2} : r_{l} ^{2}

i.e The ratio of the surface area = 5^{2} : 7^{2} = 25 : 49

So, the ratio of the surface areas = 25 : 49.

Hence, the ratios are given by 5:7, 25:49, 125:343.

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