Tanzania is about 57 times bigger than Hawaii.

Hawaii is approximately 16,635 sq km, while Tanzania is approximately 947,300 sq km, making Tanzania 5,595% larger than Hawaii. Meanwhile, the population of Hawaii is ~1.4 million people (62.5 million more people live in Tanzania).
Tip: This to-scale comparison of Hawaii vs. Tanzania uses the Mercator projection, which distorts the size of regions near the poles.